Hello, common practise is for the re-platers to stamp the barrel. I'd guess that PJ Engineering in Wolverhampton have re-plated the cylinders in the past.
Must have been a while back as PJ don't do re-plates anymore. I'd be tempted to check that there isn't a steel liner fitted, as that's what they do these days and I've yet to hear a good report sorry.
Paul
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More **** two strokes than you can shake a **** stick at.