: Those AMI 7750s look suspect from a number of perspectives - the
: first uses the pre-war style of Heuer "shield" and,
: though it lingered on post-WWII for some models, it had already
: been replaced with the deeper shield for new models like the 403
: and 433 in 1946. That one would find its way onto a movement
: from 1973 on would beggar a bit too much belief for me. On the
: other, it looks even more like an afterthought, as do the 3H
: markings on both watches. Possible? Yes, but I for one am not
: convinced.

Both in different cases from the AMI 510.543s we know about too, of course.