Hi, I recently obtained a '67 Supra which looks pretty good outside of the fact that I think someone replaced the strainer with a P-85 strainer. My question is: What strainer model originally came on the Ludwig Supraphonic Snare Drum. It, of course, has the Keystone badge. It is the P-83?

Note: the current strainer has the 70's looking strainer (P-85, I think) with the Ludwig in black written across the outer mechanism of the strainer/throw.

Thanks.