Source For Inlay/Overlay Material

[Redacted]

Any recommendation as to a source for pearloid/celluloid material as shown on the fingerboard of this 

Stromberg Voisinet?

  https://godzilladestroystokyotower.files.wordpress.com/2020/07/imag...

[Ed Minch]

ebay is full of the stuff

https://www.ebay.com/i/292952580615?chn=ps&norover=1&mkevt=...

you would like to have the real celluloid nitrate but it frequently comes with a HazMat charge. 

Ed