Having just received one of these as part of a Hw35e combo deal with Jon (Buddyboy, who btw is an excellent chap to deal with) and taking a guess that it falls under the collectables category considering the lack of info available on the bbs and google, does anyone know anything of the history of these scopes?

I'm mostly just wondering if it's a vintage scope or a modern one, and about the unusual shape of the reticule (perhaps it was made specifically for the Japanese market (sorry ) and was wondering whether it served a purpose or was just a gimmick at the time.

Thanks all.