Information on 10 gauge frame size 4?

[GH-16]

According to the pictures, this does indeed appear to be a four-frame gun with unstruck barrel weight of 6lb 9oz.

The best way to tell what gauge it is would be to measure the inside diameters of the barrel & chamber bores, followed up with a PGCA letter if the factory records exist for it.

[Drew Hause]

As Paul observed



The 'D' usually indicates Parker D3 3 iron "Oxford"
Interesting mark on the L tube I can't ID

[Zac Gallus]

Originally Posted by Drew Hause

Interesting mark on the L tube I can't ID

Yeah I noticed that and thought it was odd too. Not sure what it's supposed to be

[Double Lab]

Drew,
What is the left arrow pointing to?