Stripper on the back, mmm, blistering:
Post scraper and it seems the blistering was where the stripper had separated the original finish from the other coats, where the finish was sanded through, the wood retains the white primer:
Having done the front too, I thing they started sanding the front by hand, going perpendicular to the grain, then switched to an orbital sander, but got bored of it before the back was done, I think the strip was necessitated by the original finish crazing, due to the paint stuck in the cracks in the original finish.
Front hasn't come up as clean due to being mean with the stripper to save the binding. Going to be a wire wool job tomorrow to get the rest. Also gonna need hefty sanding/scraping to get a nice finish put back on it.
There is a binding gap at the back, some of the binding came loose, easy enough to glue and tape when the time comes.