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fabotelli · 29 July 2023, 07:09 AM

I'm looking at a very early 1675...there is a problem I think.

1) It's serial number is dated to 1966
2) It's got a 1570 caliber movement.

1570's were not used in GMT's, but I see references to 1575 sometimes having 1570 stamped on the bridge.
But this one says 26 Jewels, too (not the 25 in a 1575).

Could this be legit?

(edited to correct date code)

fabotelli · 29 July 2023, 08:03 AM

btw ...here's the listing - too rich for my blood now...guess it's real!

https://www.liveauctioneers.com/item...zel-wristwatch

springer · 29 July 2023, 08:27 AM

All of the later GMT 1675 movements were stamped 1570 - but are referred to as caliber 1575 which is a slightly modified 1570 movement which is modified to accept the parts for the 24-hour hand.

Prior to around 1965, the movement for the GMT 1675 was the 1560 caliber, which were stamped as such on the movement.

shedlock2000 · 29 July 2023, 03:21 PM

I came here to give you what John has already. What John said! Lol

Sent from my iPhone using Tapatalk

29 July 2023, 07:09 AM	#1
fabotelli "TRF" Member Join Date: Jun 2023 Location: nyc Posts: 31	1570 movement in a 1675? I'm looking at a very early 1675...there is a problem I think. 1) It's serial number is dated to 1966 2) It's got a 1570 caliber movement. 1570's were not used in GMT's, but I see references to 1575 sometimes having 1570 stamped on the bridge. But this one says 26 Jewels, too (not the 25 in a 1575). Could this be legit? (edited to correct date code) Last edited by fabotelli; 29 July 2023 at 07:47 AM.. Reason: to correct date code

29 July 2023, 08:27 AM	#3
springer 2024 Pledge Member Join Date: Apr 2008 Real Name: jP Location: Texas Watch: GMT-MASTER Posts: 17,242	All of the later GMT 1675 movements were stamped 1570 - but are referred to as caliber 1575 which is a slightly modified 1570 movement which is modified to accept the parts for the 24-hour hand. Prior to around 1965, the movement for the GMT 1675 was the 1560 caliber, which were stamped as such on the movement. __________________ Member of NAWCC since 1990. INSTAGRAM USER NAME: SPRINGERJFP Visit my Instagram page to view some of the finest vintage GMTs anywhere - as well as other vintage classics.

29 July 2023, 03:21 PM	#4
shedlock2000 2024 Pledge Member Join Date: May 2008 Real Name: Steve Location: Canada Watch: 16753; Bellini Dia Posts: 1,770	I came here to give you what John has already. What John said! Lol Sent from my iPhone using Tapatalk __________________ The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it. SS Submariner no date 1992 (sold); SS GMT II 2007 (sold); SS GMT II C 2008 ('M' series) (sold); SS Sub C 2011 (sold); BB GMT 1971 (sold); Omega 50th GMT

29 July 2023, 08:03 AM	#2
fabotelli "TRF" Member Join Date: Jun 2023 Location: nyc Posts: 31	btw ...here's the listing - too rich for my blood now...guess it's real! https://www.liveauctioneers.com/item...zel-wristwatch

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