Steven - many thanks for your prompt and helpful reply.
I tend to get a little paranoid about wear, and if I don't see what I think I should be seeing I tend to fear the worst.
I had looked at an example on line, and it did seem as though the design area differed in the centre of the bowl, but your links do appear to match my example, so all does appear to be o.k.
The information I was using seemed also to be suggesting that copies from eastern Europe had been seen, but this may well have been referring to other designs from this factory, and not this gui pattern.
This came from one of my local charity shops, and the small sticker, which I've kept, says simply '6/6 - £3'.............so I assume it had been in the shop since the 6th of June..........very remarkable that it should have waited form my arrival.

thanks again.