Beautiful collection Jay.
At the risk of derailing this thread (sorry for the pun)...
Dueber-Hampton has an interesting history and were oddly instrumental in the creation of the Soviet watch industry. Dueber-Hampton failed during the Great Depression; at the same time, Lenin was looking to modernise Russia following the revolution and one thing he identified a need for was a supply of reliable watches.
European governments at the time were not particularly co-operative but in those pre-Cold War times US/USSR relations were cordial. The Soviets bought the machinery, IP rights and all unfinished stock and had them shipped to Moscow in 1930 along with key staff who were given 1 year contracts to train Russian workers.
This became the First Moscow Watch Factory which continued using the Hampton pocket watch movements until into the 1960s (possibly 1970?) when they were finally replaced with locally designed smaller watch movements (these are still made under the 'Vostok' name). They used these movements for dive watches (191-ChS) for the Soviet Navy and wrist watches.
Interesting aside; very few - if any - of the Russian workers could speak English; but fortunately they and the Dueber-Hampton staff could all speak German!
Given the movements are for pocket watches these early Soviet watches are huge...
The 191-ChS dive watch has a 60mm diameter (2 1/4 inches...).
Zlatoust still make ChS watches but using Vostok movements and now in a range of sizes. I bought these two back in 2020 (although thanks to Covid I couldn't have them shipped to Brazil so they are enjoying my brothers hospitality in Suffolk).
My ChS is a slightly smaller 46mm version (so about the size of a large G-Shock). Most of these ChS watches have the winding crown at the 9 o'clock position so as to not impede the wrist; as a left hander who wears my watches on the right hand minehas a 3 o'clock crown.
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This is modern re-creation of the Type 1; the originals had the Duebur-Hampden pocket watch movement, mine has a modern(ish) Vostok movement designed in the early 1960s
This fella is 'only' 50mm diameter...
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