Ok, the one you link to on Watch International is a puzzle, since the title says 7750 (mechanical) but the description says 251.262, which is a Swiss 27 jewel quartz movement.
Looking at the display-case, tho, shows it to be a mechanical movement ... but perhaps it's a cosmetic-only display back, to make a quartz watch look like a mechanical one.
I would write to them for clarification. Since they are a forum approved dealer, they are not trying to fool anyone here .. but with replicas, it's always wise to ask for clarifications