OldTroop - nice site. However, I see on the trunion of say an Romy kit, it has the symbol for the Romanian then the year then the serial number that matches on all parts. I am trying to replicate that but on a Bulgarian AK. So on the bulgy trunion, does it have the Circle 10 then the year and then the serial number? If so, what format is used on the serial number? Is it just numbers or is it preceeded by letters?