The largest independent, non-commercial, consumer-oriented resource on the Internet for owners, collectors and enthusiasts of fine wristwatches. Online since 1998. | ||||||||
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Vintage Heuer Discussion Forum
The place for discussing 1930-1985 Heuer wristwatches, chronographs and dash-mounted timepieces. Online since May 2003. | |||||||
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Sorry Timothy, don't really know for sure. The ESA Y2 is actually a family of movements rather than one specific one and, as far as I know, they take a range of batteries too. A 900231 takes a 344 battery and I believe that's the movement in that diver, but maybe Stewart, James or one of the other forum-goers really familiar with the watches can confirm?
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