Concepta is gone, and even if he weren't, he wasn't the modder. Keep in mind, the A7750 hands need to be modified to work (unless you have a very old 21.6k movement). Also make sure you use the ETA day and date wheels. In the US, you have several choices. Personally I would reach out to to member "misieped" and see if he can do what you need. PBDad is another choice, but he has an outside watchsmith that would probably do the work (which means it could take longer), or go to Vaccum (aka Vac's Modification Shop) if you also want the dial re-lumed,