But does anyone happen to know the movement used in the F1 series 1 from 1986? It’s the watch that first got me into watches as a child, and I tracked one down a mint condition one a couple of years back, but it’s finally given up (tried a battery change). I have a feeling that Tag will charge me multiples of what it cost, so am hoping to track down a movement and see if I can have a local watchmaker fit it. Any ideas? And does this plan sound feasible?