I have one. Bought it in the early eighties. They originally came with a very trick "Micrometer" sight, with interchangable front reticles. The holes on the rear top of the barrel are for the rear sight. I fitted mine with a weaver style rail and added a scope. Very accurate. We only use these days for a paper turkey target shoot on Thanksgiving Day. The winner gets to carve the bird! If I were to buy one now I would offer $65-75 dollars. They really are very good quality and last a lifetime. The care a feeding are simple, buy a piston-gun cleaning kit, contains proper oil, (Do Not use Household oil as it will damage the seals), and little felt cleaning pellets. I used to live a little more urban and did take pests and varmints with it a long time ago. Preaty good on rats and ground squirrel's................