S/el Gen 2 CG1115 - replace quartz movement?

So I have a 1997 vintage S/el CG1115 that's got very strong sentimental value to me. Based on the description I believe it's one of the rarer "update" models that were only in production for a year or so. It was repaired a couple of times in the 2000's and then it died completely about a decade ago. I was advised at the time by the watch repairer that it needed a whole new quartz module. That repairer closed shortly after and the watch has been gathering dust since.

Any advice or insights into how hard or easy it is to find one of these mechanisms now?

Looks like what I need is a ETA 251.262 movement.