This is a great 1896 rear sight for the 30-40 US Springfield Krag Jorgensen rifle. I believe it is called a type 4 sight by collectors because the mark for 1800 yards was recalibrated and put lower and it had the larger knob on the elevation adjustment - made between July 1900 and Aug. 1901. It is in great shape, no rust and minor wear on the edges and where the slide rubs. No rust, minimal blue thinning/browning on the sides - overall a very nice sight. Perfect for restoration of a nice 30-40 Krag.Check out my other auctions because I have listed, or will be listing other ex gunsmith assorted civilian and military gun parts including a Mauser or Anschutz .22 rear sight, Browning BAR, 98 Mauser and a Hensoldt scope with claw mounts. High bidder will pay $ 4.95 for Priority Mail postage. PayPal accepted for payment. Ebay forbids international shipment for gun parts - do not bid if it is illegal to have gun parts shipped to you. No buy it now sales. I am glad to combine shipping if you win multiple items.