The Last Bass Outpost

I have a 1983 American Standard Precision. I thought that the tone knob wasn't working and so just eq'd the amp to get different tones. However, recently I tried the tone knob again and did notice a very slight change in tone. So it was off with the scratchplate to have a look. The capacitor is rectangular and orangey-red in colour. It has has a value stamped on it of .022-200DC. This confuses me as I would have expected .05. I don't think by the way the 'plate came off, and the condition under the 'plate, that anyone has been in there before. Does anyone know if Fender ever fitted capacitors of this value to their basses. I'm wondering if a guitar capacitor found it's way into the bass bin or the employee fitted the wrong one. Whatever is the case I'm going to fit an .05 cap and see what happens unless anyone here can throw any light on my problem.