These rings came on a Model Seven custom rifle I recently purchased and I won't be using them. I can't tell you if they are made by Conetrol or Gentry. I'm told they are interchangeable on Conetrol bases, but I'm sure there are others here on the Fire with more knowledge. They are for a 1" main tube. The Letters L & O or L & C are stamped on the bottom of the rings, so I'm assuming that means the are low height? No issues with these rings.
$75 shipped for the pair. I accept paypal F-n-F or USPS money order for payment. Drop me a PM if you need more info, photos, etc.
Here are the bases the rings were mounted to, if that helps with the identification. Front mount on the left and rear mount on the right. The seller first told me they were Gentry, and later stated they were Conetrol. ?? There is no SK stamping on the side of either base per the SK norm.