Hi guys, nice to meet you all! I've been browsing on here for years but now finally going to start contributing and sharing/asking about info. My first question is about one of my Waltham 57's. It's a relatively early one and came key wind/key set originally but at some point was changed to stem wind/lever set. It doesn't look like it was an Abbot's conversion nor is it marked as such. Does anyone know more about this, such as when it may have been done and by whom? And for anyone wondering, the watch works and runs for over 24hrs on a full wind but is about 25min slow per day. It's currently being serviced but here are a few pictures I have of it. Thanks everyone!
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