I found a what looks to be a Japaneseicon rifle backsight in a box of assorted parts at Warminster.

The backsight leaf is 2.8" long from the axis pin to the top of the leaf and .8" wide It is marked from 3 to 15 on the left side and evens on the right. The slide cursor has spring loaded finger grips to raise or lower it. It has a right angled battle sight.

There are two extending arms, one on each side, marked 2 with a notch beneath and 3.

Overall width of the arms folded is 1.6"

Any ideas chaps? And thanks
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