Originally Posted by Pearse

The 25w G12M speakers are post 1962 when the changed from 20w to 25w. the handles on the bottom cab if they are metal are pre 1971 if they are plastic they are more recent. It also seems the back of the bottom cab is not original maybe someone replaced it as for the top one it doesnt seem like a Marshall but the bottom one definetly is because of the finger locking joints. in addition for something extra, if you look in the back of the bottom cab it should have the signiture of the guy who made it this was done since Jim made them and continues today for recignition.