OK, my wife's favorite watch (black dialed SS Ladies Datejust) is getting somewhat unreliable and it's time to start looking for replacement a21j movement but I have no idea which one/what size, etc. Also, if I was to get an ETA 2671 (probably cheaper to buy new watch as ofrei wants $140!!!) and set of hands would that be more or less a direct swap or are there other mods that might need to be done? I envision clipping the dial feet, attaching dial with "dial dots", sourcing and installing ETA hand set, trimming ETA stem and attaching crown, transferring over date wheel overlay, stuffing it into case with existing plastic movement holder/spacer.
If I am way off-base here please let me know.
Thanks in advance...