Pre-owned Olympus OM-1 w/ Mechanical Shutter [+Missing Parts]/Needs PX-625 batt.

[+Missing Parts]

I bought an awesome compact camera from my favorite thrift store (maybe two decades ago, more or less) even if had obvious issues & even if it had already collected dust. (It requires a button-type battery, PX-625.)

This OM-1 Camera has the MD patch (Motor Drive) badge which would indicate that it is prepared to accept an accessory grip that also winds the film automatically. (The rewind knob is obviously missing, but can be bought online). Some standard issues are evident such as: its lack of battery cover (which I tried to get from a particular camera repair shop but they don't have it—which, according to my quick researches/online lookup, are available now to be purchased online, I believe) and perhaps its seemingly busted self-timer (see photos).