Right well (i'll let someone else supply the prices) but... The WW refers to the initials right at the bottom of Victoria's neck... you may, or may not see WW. If the WW is incuse it i'll look like someone has carved the WW in, basically the WW will be indented. If the WW is in relief or raised, it means it will stand out, the lettering around the edge of the coin is in relief, i.e it stands out above the field. Incuse is the opposite, it would be sunk into the field. w.w. means that dots are present in those places on the coin. TB i imagine stands for toothed borded, the obverse of George VI coins have a toothed border. RB should be the dotted border, like Elizabeth II coins, have a look at a penny out of your change to see what i mean. A mule is basically one side has the toothed, the other side has the dotted border. Black finish means the coin is darker than usual due to artificial toning done to prevent confusion with half sovereigns, bright is a coin that wasn't artificially darkened). A proof is a proof, and i believe this has been discussed before. (I think i got all that right, but having never collected farthings or actively read up on any copper/bronze coinage, i can only comment upon what i've seen whilst passing through those areas in coin catalogues).