AGA tang sight

[JSnover]

233265
Ran across this sight the other day and wondered if anyone can identify it. Other than graduations and "AGA" (which leads me to believe it's a Parker Hale) it is unmarked. From centers, the hole is 1.125" from the pin.
Couldn't find a "Vintage Sight" forum so I posted here. I'll try to upload more pics in a bit.

[JSnover]

233266

[barrabruce]

It’s a A G Parker sight. The little right hand foot on the A makes it look like a A instead of a P.
Could be what I’m looking for.
One that goes onto the Rimfire scope groove.
Need more picks.

The second upload didn’t work.

[JSnover]

Try this thread, I had better luck on my second attempt
http://castboolits.gunloads.com/showthread.php?373987-quot-AGA-quot-peep-sight

[JSnover]

If you think you can use this sight I'll take some measurements for you. It didn't cost much and doesn't fit any of my guns.