That's OK, Ken, and thanks for looking

I will just keep Googling it until I come up with a luthier supply store someplace that has some. Heck, if I have to then I will buy about 650 sheets of 1.5 MM celluloid, half black and half white, shuffle the sheets in a big jumbo-poker card trick, and start spraying acetone in a fume hood to laminate it all

A bunch of saw cuts later (and an enormous amount of waste and inefficiency later), and I should have a large enough supply of it to supply you and every other luthier and refinisher on the planet an entire lifetime's supply

Do unto others as you would have them do unto you, and sit in with the band whenever you can, to keep your chops up!