Omega Watch Forums – Quick guide to Berthoud UG 38mm waterproof monoblocco chronographs

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Some of the most wanted references of UG are the 38mm waterproof (or pressure back or monoblocco) chronograph. Made in (very) limited numbers and not many survivors. The case is very similar to the famous Bovet/Vetta cases but they are certainly not the same. Unfortunately it is still unknown who produced this cases.

These watches were made in 8 references but I would not be surprised if a 9th one was made – reference 7075 – but so far I have not found a (trace of a)…

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