Brittish Proof
Back
Birmingham proof in context
Period
|
Marks
|
|
1813-55
|

|

|
|
|
|
1855-68
|

|

|
12
|

|
First period where caliber is marked. Normally plaved between Viewmark and Definitive proof mark.
|
|
1868-75
|

or

|

|
12
|

|
|
|
|
|
|
1875-87
|

or

|

|

|
|

or
12
|
|
|
|
|
|
|
|
|
1887-96
|

or

|

|

|
|

|

|
CHOKE
|
|
|
|
|
|
|
1896-1904
|

or

|

|

|
|
NITRO PROOF 1 1/8 oz Max
|

|

|
CHOKE
|
|
|
|
|
|
|
1904-25
|

or

|

|

|

|
NITRO PROOF 1 1/8 or 1 1/4 oz
|

|
2 1/2”
|

|
CHOKE
|
|
|
|
|
|
1925-54
|

|

|

|

|
NITRO PROOF 1 1/8 oz Shot
|

|

|
CHOKE
|
|
|
|
|
|
|
1954-89
|

|

|

|
|

900 kg
|
.729
|
2 1/2”
65 mm
|
|
|
|
|
|
|
1989-2005
|

|

|
|
|
12
|
65
|
850 bar
|
18,5 mm
|
|
|
|
|
|
2005->
|

|

|
|
|

|

|

|
LINED
|
CIP Steel symbol
|
Supplementary Proof at 1200
|
Ordinary proof at 850
|
Addition to sleeved since this new mark is a update to current technology
|
|
Copyright 2009 © shotguns.se
Last updated: 2009-12-06
|