Temporary category: World Coin Clearance

A bit of shop housekeeping: a temporary World Coin Clearance category has been added.

This is for the odds, ends, duplicates and perfectly respectable world coins that do not quite fit the main NeedThatCoin lanes, but still deserve a proper listing rather than disappearing into a bulk box.

Some will be modest pieces. Some will be mixed groups. The point is simply to clear older stock in a tidy way, while keeping the main shop categories focused.

The category will be there for as long as it is useful, then quietly disappear once it has done its job.