Unusual Strat tone control(s)

[J M Fahey]

A friend in Buenos Aires got a Strat for repair and found these unusual (for me) tone controls:









from what I see:



anybody seen it before?

Any comments?

Maybe some skilled simulator can compare its 0-10 settings with the standard tone control found everywhere.

I can not read resistor value from pictures, waiting for my friend to answer, but maybe itīs a "known circuit".
Thanks.

[Guitarfix]

It looks like a modified 'grease bucket' circuit.

[Mark Hammer]

Yup. I'd concur with that.

[Helmholtz]

Here is some analysis + measurements (sorry, German text):

https://www.guitarworld.de/forum/viewtopic.php?t=10041

Greasebucket see post #3.

[J M Fahey]

Thanks to all of you.