Have a look at www.batterycrossreference.net
As a last resort, depending on the size of screw and if it is recessed, touching a hot soldering iron tip to the head of the screw for a few seconds, then letting it cool can break the bond between the two parts.
Welcome, Vincent. Good to see another Canadian on here. Don’t pressure yourself to buy a watch every year. It has to feel right. If it takes two, three or four years, so be it.
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