That is the arsenal mark.
The Koishikawa Arsenal in Japan made both the Arisaka's and Siamese Mausers. It is referred to as 'stacked cannonballs'.
Edited to correct the arsenal name.
Complete thread:
- We are Sia-mee-uz if you plee-uz... -
Hoot,
2015-01-29, 08:30
- AT ANY other point in the last few years... I have wanted a -
Rob Leahy,
2015-01-29, 09:26
- I was thinking of you when I found it Rob. -
Hoot,
2015-01-30, 10:11
- Good! I'll bring my Enfield in .375WBY...It is a club - Rob Leahy, 2015-02-02, 17:35
- I was thinking of you when I found it Rob. -
Hoot,
2015-01-30, 10:11
- We are Sia-mee-uz if you plee-uz... - Frank S, 2015-01-29, 12:30
- At one point in time, I had 3 Siameeesesess -
Andrew,
2015-01-29, 18:29
- Siamese Triplets? - Rob Leahy, 2015-01-29, 20:12
- We are Sia-mee-uz if you plee-uz... -
Catoosa,
2015-01-30, 09:37
- That is the arsenal mark. - Hoot, 2015-01-30, 10:05
- AT ANY other point in the last few years... I have wanted a -
Rob Leahy,
2015-01-29, 09:26