Lyman 55R receiver sight ?

[Dom]

I was given a large 304711304712304713304714box of all kinds of old reloading equipment & molds. In the box was this Lyman 55R receiver sight. Any one know what it fit's . Want to sell it but need to know what rifle it on. Your help appreciated.

[Vopie]

Looks to be for the Remington model 33 and 34. Have a few of 'em myself.

[Dom]

Thanks