Anyone know about "MR" serial number?

[Pa_Dan]

I'm not convinced these are "b" stocks. One was stamped "used" if MR was used as the sn for "b" stocks, why was that one stamped used but not the others?

 

[davies]

Thats it!!!!!

It's a White Pearloid Nuclear Extreme LP - part of a series limited editions made during 2001-2002. The previous pic I posted was of my Black Pearloid which also has an MR serial number.

In addition to the Pearloid tops, there were four 'crackle' tops - red/yellow, blue/yellow, green/yellow and black/white. The specs were significantly different from Standards.

The Pearloid tops were for UK release only.

I'm not convinced these are "b" stocks. One was stamped "used" if MR was used as the sn for "b" stocks, why was that one stamped used but not the others?

I agree.