I have these Conetrol "Gunnur" rings and bases I took off my Sako L579 243 around 1998. My dad purchased them in Aug. 1973 for this Sako, which was one of several rifles he used. I have the receipt that says they are "Low", and boy are they! Let me know what you think they are worth? I can't decide whether to keep them because I am using a Zeiss 4.5-14x44 which has a 50mm outside objective.