I just bought a Lyman for my Winchester 94 in 38-55, mfgr'd in about 1907. Screwed right in with factory holes in the tang. It was about $90 from Brownell. I had an old Globe type front sight I put on it that matched.When you get into the vernier type,they get pricey real quick
https://www.brownells.com/rifle-parts/sights/rear-sights/winchester-94-no-2-rear-sight-prod7961.aspxhttps://www.brownells.com/aspx/search/default.aspx?cid=0&k=lyman%20globe%20sight&t=PHere is the same type tang sight and front sight from Amazon.
https://www.amazon.com/s?k=Lyman+tang+sight&ref=nb_sb_noss_2These are nice because have an aperture at at my eye and a selection of front sights. I put another aperture in the front then I have three concentric circles when using a 2" black bull at the target