I once owned beautiful "crowbar" of rifle FN made Browning Safari Grade .300H&H with Browning branded 2-7x variable made for them by Redfield. That one had small square as aiming point which cost cool extra $10 when it was made. I sold it for bunch of money and collector was happy to get the scope with the rifle. Optically it was worse than $60 ones available at Walmart. The only half way decent old American scope that would be useful was Layman 'Alaskan'. Old Weavers from El Paso like most of the rest are junk.
By comparison older vintage European POST WWII scopes from Zeiss, Kaps, B Nickel, Khales, Carl Zeiss Jena (E.German) are still quite usable.