Blancpain

Hi Gents, I'm curious if anyone has any documents or perhaps a watch ad showing when Blancpain first started to use the moisture indicator? If no documents or ads, does anyone have a firm idea of what year it was - 1954? Thank you and kind regards, Bill

I've been trying to remember where I read about Blancpain's history with the moisture indicator; I finally tracked down this thread you and another member had a few years ago: So, I'm trying to confirm the date as two when this LIP Blancpain was made? Th...  

Does anyone have an opinion or guess as to when Blancpain first started using the moisture indicators? I'd very much like to establish an timeline, even if based on subjective data. Thanks and kind regards, Bill

( Sorry, don't bknow who to credit for this picture I found a long time ago ). And not this: Which looks more like being paint than a moisture indicator. I saw the picture you posted on a small FF from the French Army, and like you i've read that it was ...  

Thank you for your help and opinion. I've been trying to nail down a date, but like yourself have had no luck with documents or firm data. I'll continue to try to dig up any further information and share it here when I make a discovery. Much appreciate yo...