Pakistani made Sten Mk. V

[Brit plumber]

I would like to see a photo of these markings. I suspect (and it is only a suspicion) that the serial is UF65A00.... but perhaps with POF added at a later date when it had been further overhauled. I have seen a lot of Mk5 guns with UFxxAxxxx numbers which have been applied to guns undergoing FTR where the original electo pencil number has been erased.