Inside of Sonor Phonic shells: clear coat?

[TAD]

Hi,

I'm trying to match the interior finish of my Phonic drums for my new untreated beechwood shell from ST Drums.
I think it's 1-2 thin layers of a clear varnish but I'm not sure. I don't think it's oiled.
Anybody here have a clue what was used for the Phonic's that don't have veneers on the inside?

Thanks!

/T.

 

[Frank Godiva]

They were sealed with a clear coat.

I would PM Gary at Summit Drums. He has been inside many Phonics

His handle here is Summit