The caliber 256.041 is currently discontinued by ETA. The replacement is caliber E61.041. You may also be able to use ETA caliber 256.031, but this should be confirmed first. If you just need the electric module, the part number is 4000.
This movement may also be related to the following:
Longines caliber 150.2
Concord caliber 46
Movado caliber 46
Please share your experiences and thoughts about the ETA caliber 256.041 in the comments section below…