Hi . There is a a philips serial number (3186DG932T150BPA1)
I have learned how to read these - Currently working on a quote from mouser.com , but this company is very slow to respond and finicky and I'm not counting on them.
Very interesting point about the caps being made specially for carver. The closest to a 9300 uf capacitor I could find at digikey is a 10000uf 150v but these are not stock items even at this supplier.
Someone posted a video of one of these amps on sale with an accompanying video of the old caps pulled out and replaced. I was hoping he might see my post!