OK then, $1000 bounty on this gasket in good condition (original gasket, none of the repros that allegedly were made for a short time and didn't really fit). I have absolutely no place to store an entire parts car. Polishing the glass won't work because it's just as pitted and scratched on the INSIDE (how the f does that happen???), so I've got my back to the wall unless I want to never ever drive this car into the setting sun again, which certainly limits my choice of car shows. According to my reading of parts manuals, it is Mopar part #1882146 and is shared between all 2-door coupe and convertible Chryslers (not Dodge/Plymouth/Imperial) between 1960-1946. There are some isolated cases of other cars in that time period that use the gasket (apparently 1960 everything Mopar? But this seems hard to believe as starting in 1961 the 2-doors are called out separately, but models like the Valiant seem identical from 60-62... I'd greatly prefer something out of a very similar car.) This can all be checked from
jholst.net Chrysler 300 Resources Page, looking at the Body parts manuals, section 23-66-235.