HELP finding specific slide pot for repair

[Rodgre]

Hello stompbox friends. I'm trying to replace a slide pot on a graphic EQ in an older Tapco mixer. I seem to be striking out with Mouser and Digikey. Can anyone help steer me in a direction where I might find it?

It's a 50K slide pot with a center detent. The dimensions are 65mm long by 8mm wide and 12mm tall (not counting pc pins).

The writing on the side of the pot says: 005445   50K   SPEC

Any clues?