Rear aperture sight on Lakefield 90B

[DaveTrig]

I'm hoping someone can help me out here.

I've got a left-handed Lakefield 90B bolt-action .22 rifle that I took in to sell for a friend. I have a customer interested in buying, but I noticed that the rear aperture sight is missing. My friend is looking through his part to see if he has it, but I need an idea of what to replace it with if he can't find the original.

Here's what's on the gun now:

It looks like what's missing is a vertical dovetail piece with an aperture mounted on a right-angle.

Can anyone offer any insight? Is there something I can just get from Brownells that can replace the whole rear sight?

Thanks in advance,
Dave

 

[jrothWA]

Model 90 was the Biathlon model from Savage Lakefield,

mount is similiar to the original Lyman for the Marlin 2000 Biathlon.

Suggest contact Lyman and possibly confirm??

Maybe try Williams gunsights, as they made the second series of rear sights for Marlin, as the repeatability of the Lyman was a concern.

If not sold I may be able to suggest a biathlon group that might post it on website ??