I've had this nice one for a couple of years, and haven't done anything to it; it keeps very good time, and I assume it was serviced not long before I acquired it. This Cyma appears to be all original and probably dates from the later '20s. The movement has 6 jewels, so it's certainly not high-grade, but it seems to work well. Very nice size on the wrist (about 31-32mm in diameter; my wrist in the last photo measures 6.75"). The (presumed) nickeloid case (with fixed wire lugs) is in nice condition, the dial and hands as well. It is on a gently used 22mm buffalo leather open-ended strap. I would like what I have in this, $175, but I will include in this domestic shipping and paypal fees.