First I would like to thank everyone for taking the time to answer my question.
Bit of a update, tried the 'spit' test, no bubbles. Took it to the club this afternoon, first shot over the crono 661, second 734, third 776, and it was consistent after that.
Don't know if anyone would know the year of manufacture, but the serial number is 02936.
Can you suggest someone that I could take it to that could sort the reg, will be at Gp7.