I am impressed by the performance of the original piece. Did you put it on? Did it fit well on the wrist? The lever looks like it may get in the way. Thanks for posting!
I've seen other first gen Dynamics with handwind movements. Are the 55x/56x movements more desirable? Also, why do you say that the bracelet is the key?
This is a first generation Dynamic, which is by far my favorite of the three. Very seventies with the supergraphics, but not tacky as so many seventies designs could be. I was fortunate to pick this up a number of years ago on eBay. It had a mint dial, albeit with old lume, better seen in this next