Almost looks like a gold painted washer with the legend "Space Medal / 1962" stencil painted onto it. Not sure what on earth it could be (or off earth, I guess). Uniface - the reverse has a bit of a rough finish but no apparent deliberate details.
Interesting. I googled your item with no results. Looks to be simple Exonumia. It is definitely a washer, flat and rough on one side and rounded on the stamped side. Maybe created to be given out as an award? The font looks like a 1962 style of lettering. It did remind me of a type of error where coins were actually struck on washers! If you don't mind me sharing with you? I want to share this webpage with you - http://www.error-ref.com/coins-struck-on-washers-gears-and-other-hardware/
