Some classic shapes don't pop up often. I was looking for a Charatan's shape #171 called the Trafalgar. Finally I got one but didn't see (before buying) that the rim was out of round probably due to overeaming.
However, what really confuses me is the shape code (171 DC) on this specimen. As you can see in the photos below the charakters are of different sizes and not lining up. Moreover, the first digit seems to have a slightly bigger stamping depth than the 4 other charakters.
Looks like as if the left '1' and the (smaller) letters 'DC' were added a few years later. So the original shape # of this pipe could have been '71'. But in this case the DC-stem would be a replacement. ???
Has anyone, maybe
@kenbarnes an explanation for this odd stamping?