Looks like a CTS pot.

The number 137 is the EIA code for CTS.

The next 8929 is the date code. Probably 1989, 29th week.

The other numbers spec the pot.

Unsolder the pot and ohms measure from outside lug to outside lug to find the overall resistance.

Turn the shaft to center and measure ohms from middle lug to each outside lug.

Compare and if approx the same, it's a linear pot.

If one outside lug reads much higher (or lower) than the other, it's likely a log pot.

Got to DigiKey, Mouser, etc to find an equivalent.

DigiKey has the 450 Series of "Stock pots" that can be ordered/configured how you like.

Look in this pdf...