Re-photographing the same coin for half an hour

Sat down today to finish the small-finds catalog for last season's trench and ended up spending the whole afternoon photographing one bronze coin from every angle, trying to catch the worn reverse so it stops looking like a blank circle. Ten years doing this and I still fall into the same trap: the smallest objects demand the longest attention. The obverse is a bust you can almost name. The reverse is just weather and luck.