No sticker on the box with a part number?
Do the look like this - standard dies - about £30.00 - 35.00 posted second hand
http://www.dauntseyguns.co.uk/prodde...prod=RCB-11401
Or this - Competition dies
http://www.gungle.uk/reloading-equip...ing-dies_i1929 - about £100.00 if mint secondhand