Reference:1665 - Revision history

Admin: Style: canonical '== Sources ==' heading spacing per AGENTS.md

2026-08-08T21:31:06Z

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	See also the [[Reference:sea-dweller\|Sea-Dweller family index]], [[Reference:Movements\|movement reference]], [[Reference:Bracelets\|bracelet & clasp guide]], and [[Reference:Serial-numbers\|serial numbers by year]].		See also the [[Reference:sea-dweller\|Sea-Dweller family index]], [[Reference:Movements\|movement reference]], [[Reference:Bracelets\|bracelet & clasp guide]], and [[Reference:Serial-numbers\|serial numbers by year]].

	==Sources==		== Sources ==

	===Primary and specialist===		===Primary and specialist===

Admin: Fact fix (cross-page sweep from Reference:sea-dweller): Gross dive is 1969 Duke Univ/USN 1000ft, serial as 2,128,xxx batch - no 28-day June-July 1970 event is sourced; Single Red count attributed to Pereztroika census, Lloyd's real role kept. Sources: Rolex Passion Report (Gross account), Jose Pereztroika serial census

2026-08-08T17:28:32Z

Fact fix (cross-page sweep from Reference:sea-dweller): Gross dive is 1969 Duke Univ/USN 1000ft, serial as 2,128,xxx batch - no 28-day June-July 1970 event is sourced; Single Red count attributed to Pereztroika census, Lloyd's real role kept. Sources: Rolex Passion Report (Gross account), Jose Pereztroika serial census

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	===Prototype era (1967–c. 1971)===		===Prototype era (1967–c. 1971)===

	The earliest 1665s are the Single Red Sea-Dwellers. Fewer than a dozen confirmed surviving examples, hand-built in Geneva for the US Navy's SEALAB 3 programme, the Tektite I saturation experiment, and early COMEX experiments. T. Walker Lloyd at Rolex USA ~~gave~~ the count ~~as ten~~. The first valve prototype belonged to Dr Ralph W. Brauer of COMEX Physalie 1/2/3. SEALAB 3 took its delivery in late 1968 and early 1969. Berry Cannon's fatal decompression accident on 15 February 1969 was on a man wearing a valved Single Red.		The earliest 1665s are the Single Red Sea-Dwellers. Fewer than a dozen confirmed surviving examples, hand-built in Geneva for the US Navy's SEALAB 3 programme, the Tektite I saturation experiment, and early COMEX experiments. T. Walker Lloyd at Rolex USA hand-picked the divers who received them; the census count of at least eleven examples is Jose Pereztroika's. The first valve prototype belonged to Dr Ralph W. Brauer of COMEX Physalie 1/2/3. SEALAB 3 took its delivery in late 1968 and early 1969. Berry Cannon's fatal decompression accident on 15 February 1969 was on a man wearing a valved Single Red.

	Patent-pending caseback DRSDs follow in the same window. Marcello Pisani's batch-level forum work places hand-engraved Patent Pending production in three discrete clusters: a 1.7M serial range, then mid-1969 batches at 2.117M and 2.128M, then a Q3-1969 batch at 2.247M. The 2.1M-and-up batches all carry an inside-caseback engraving of the last three digits of the case number. The very-early 1.7M range does not. That inside-back stamp is the anti-fake tell: Perezcope used the absence of it to expose a "Patent Pending" lot at Christie's Hong Kong in 2024 as a previously-sold Mk II with swapped parts.		Patent-pending caseback DRSDs follow in the same window. Marcello Pisani's batch-level forum work places hand-engraved Patent Pending production in three discrete clusters: a 1.7M serial range, then mid-1969 batches at 2.117M and 2.128M, then a Q3-1969 batch at 2.247M. The 2.1M-and-up batches all carry an inside-caseback engraving of the last three digits of the case number. The very-early 1.7M range does not. That inside-back stamp is the anti-fake tell: Perezcope used the absence of it to expose a "Patent Pending" lot at Christie's Hong Kong in 2024 as a previously-sold Mk II with swapped parts.
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	The Mk I lacquer fades pink while the Mk II lacquer reacts with ultraviolet to chocolate brown. The two patinas come from the same factory in adjacent batches and from different chemistries: Mk I from Beyeler, Mk II from Stern.		The Mk I lacquer fades pink while the Mk II lacquer reacts with ultraviolet to chocolate brown. The two patinas come from the same factory in adjacent batches and from different chemistries: Mk I from Beyeler, Mk II from Stern.

	Documented Patent Pending recipients include the US Navy Experimental Diving Unit. Charles E. Gross's loaner ~~#2128225 sat in a 28~~-~~day simulated~~ saturation dive to ~~1000 feet in June and July 1970~~. Charles Rayner's #2128269 wears a Mk 0 DRSD dial, an outlier even inside the Mk I batch.		Documented Patent Pending recipients include the US Navy Experimental Diving Unit. Charles E. Gross, at the EDU from 1967, drew a loaner from the 2,128,xxx batch; his 1000-foot saturation dive with the US Navy at Duke University dates to 1969. Charles Rayner's #2128269 wears a Mk 0 DRSD dial, an outlier even inside the Mk I batch.

	===Double Red Sea-Dweller, Mk II===		===Double Red Sea-Dweller, Mk II===
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	===US Navy Experimental Diving Unit===		===US Navy Experimental Diving Unit===

	The USN EDU at Panama City, Florida received a loaner batch of Patent Pending DRSDs ~~in 1970~~ for operational evaluation. Charles E. Gross~~'s case 2128225~~ was issued ~~for a 28~~-~~day~~ saturation ~~simulation~~ to ~~1000 feet at the Panama City chamber facility, June through July 1970~~.		The USN EDU at Panama City, Florida received a loaner batch of Patent Pending DRSDs for operational evaluation. Charles E. Gross, at the EDU from 1967, was issued an example from the 2,128,xxx batch; his 1000-foot saturation dive with the US Navy at Duke University dates to 1969.

	==Auction record==		==Auction record==

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	{{DISPLAYTITLE:Rolex 1665 Sea-Dweller}}		{{DISPLAYTITLE:Rolex 1665 Sea-Dweller}}
	{{#seo:		{{#seo:
	\|title=Rolex Sea-Dweller 1665 — Double Red, 'Great White', 1967–1983 \| BezelBase		\|title=Rolex Sea-Dweller 1665 — Double Red, 'Great White', 1967–1983 \| BezelBase
	\|description=The 1665 is the first Sea-Dweller — 1967 to 1980, 40mm Oyster with helium escape valve. Patent Pending DRSD prototypes, Single Red, Double Red, Great White, and COMEX-marked dials documented. Cal 1570/1575.		\|description=The 1665 is the first Sea-Dweller — 1967 to 1980, 40mm Oyster with helium escape valve. Patent Pending DRSD prototypes, Single Red, Double Red, Great White, and COMEX-marked dials documented. Cal 1570/1575.
	\|keywords=Rolex, 1665, Sea-Dweller, Single Red, Double Red, Great White, DRSD, COMEX, Patent Pending, Cal 1575, helium escape valve		\|keywords=Rolex, 1665, Sea-Dweller, Single Red, Double Red, Great White, DRSD, COMEX, Patent Pending, Cal 1575, helium escape valve
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Klaudiusz: Internal linking: related references + component links

2026-07-18T12:55:00Z

Internal linking: related references + component links

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	The fake-detection record matters here. The Christie's HK 2024 lot 2316 is the most-cited recent example of how the Patent Pending market draws fakes. Perezcope's October 2024 forensic post identified the watch as a previously-known Mk II that had been re-sold in 2013 with later parts and was now being re-presented as a Mk I Patent Pending. The inside-caseback last-three-digits stamp was absent, the canonical anti-fake check that Marcello Pisani's batch-mapping work makes possible.		The fake-detection record matters here. The Christie's HK 2024 lot 2316 is the most-cited recent example of how the Patent Pending market draws fakes. Perezcope's October 2024 forensic post identified the watch as a previously-known Mk II that had been re-sold in 2013 with later parts and was now being re-presented as a Mk I Patent Pending. The inside-caseback last-three-digits stamp was absent, the canonical anti-fake check that Marcello Pisani's batch-mapping work makes possible.


			== Related references ==

			* [[Reference:16660\|Sea-Dweller 16660]] — "Triple Six", First 4000ft (1978–1988)
			* [[Reference:16600\|Sea-Dweller 16600]] — Cal 3135 (1989–2008)
			* [[Reference:116600\|Sea-Dweller 116600]] — 2014–2017

			See also the [[Reference:sea-dweller\|Sea-Dweller family index]], [[Reference:Movements\|movement reference]], [[Reference:Bracelets\|bracelet & clasp guide]], and [[Reference:Serial-numbers\|serial numbers by year]].

	==Sources==		==Sources==

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	{{DISPLAYTITLE:Rolex 1665 Sea-Dweller}}		{{DISPLAYTITLE:Rolex 1665 Sea-Dweller}}
	{{#seo:		{{#seo:
	\|title=Rolex ~~1665~~ Sea-Dweller — ~~Single Red,~~ Double Red, Great White, ~~Patent Pending DRSD~~ \| BezelBase		\|title=Rolex Sea-Dweller 1665 — Double Red, 'Great White', 1967–1983 \| BezelBase
	\|description=The 1665 is the first Sea-Dweller — 1967 to 1980, 40mm Oyster with helium escape valve. Patent Pending DRSD prototypes, Single Red, Double Red, Great White, and COMEX-marked dials documented. Cal 1570/1575.		\|description=The 1665 is the first Sea-Dweller — 1967 to 1980, 40mm Oyster with helium escape valve. Patent Pending DRSD prototypes, Single Red, Double Red, Great White, and COMEX-marked dials documented. Cal 1570/1575.
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	\|image=Ref 1665 hero.webp		\|image=Ref 1665 hero.webp
	\|image_alt=Rolex Sea-Dweller 1665 Double Red ~~dial~~		\|image_alt=Rolex Sea-Dweller 1665 Double Red Mk II
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	\|image=Ref 1665 hero.webp		\|image=Ref 1665 hero.webp
	\|image_alt=Rolex Sea-Dweller 1665 Double Red dial		\|image_alt=Rolex Sea-Dweller 1665 Double Red dial
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			{{DISPLAYTITLE:Rolex 1665 Sea-Dweller}}
	{{#seo:		{{#seo:
	\|title=Rolex 1665 Sea-Dweller — Single Red, Double Red, Great White, Patent Pending DRSD \| BezelBase		\|title=Rolex 1665 Sea-Dweller — Single Red, Double Red, Great White, Patent Pending DRSD \| BezelBase