The images were embedded in the email and came as thumbnails but I tried to enhance them
The barrels are 3 Iron "British Best" or "Oxford"
![[Linked Image from photos.smugmug.com]](https://photos.smugmug.com/Damascus/English/i-T864TTJ/0/MF55w49f7bbF7z45x34pQ5Hz42d6PL33HCfH9BbCW/S/Charles%20Boswell%201-S.jpg)
The original proof marks are 1904 - 1925.
1 1/8 oz. shot would indicated 2 1/2" chambers which was not marked until post-1925
The original bore was 13 = .710" - .718"
The arrow indicates the Birmingham Proof House date code for the reproof 1954 - 1989, which I can not read. There are 2 letters in the halberds. Is the letter on the R 'B'? Let me know the letter on the L.
When it was reproved the bore was .729 so honed.
It still had 2 1/2" chambers and was proved for 3 Tons which would be for a service pressure of about 9000 psi.
![[Linked Image from photos.smugmug.com]](https://photos.smugmug.com/Damascus/English/i-C69zhXR/0/NgCjcwLj3mpRTczBhJxhpVwzf3ZVfD8xfj4CgQF57/S/Charles%20Boswell-S.jpg)