Vintage Springbok Okta puzzle State Birds and similar items

This is a vintage 1973 Springbok jigsaw puzzle from their Okta-Puzzle series (octagon shaped). It is titled "State Birds" and numbered 400PZL8036. The artwork was painted by Charles L. Ripper, a graduate of the Pittsburgh Art Institute who served as an artist for the Carnegie Museum, and who illustrated a series of commemorative stamps issued by the National Wildlife Foundation back in the 1970s. This was a very popular puzzle for Springbok and is becoming rather hard to find now. Puzzle has 500 pieces and measures 20-3/8" in diameter when assembled. Pieces are in excellent condition, nice and glossy and very clean edges, and they are the ones with the red backing. They've been stored in a zip-loc baggie inside the box to prevent loss. The box shows a little minor wear, not bad; there is tape on one corner of the lid. The back of the box has a guide to the birds in the puzzle. This is a previously assembled puzzle. I am selling a number of puzzles that come primarily from my family's two vacation homes, where they have been well taken care of and are normally marked regarding any missing pieces. This puzzle has been designated as being complete, so all pieces should be present. I have not worked this one personally, though (to be honest, I started it, but it was a little more of a challenge than I was up to). I will accept a return if there is a problem, but I don't believe that will happen. Asking $10.00 obo. Everything I have listed for sale is "or best offer", so feel free to make an offer. ~~~~~ ALL ITEMS ARE AVAILABLE FOR LOCAL PICKUP. I sell a huge variety of stuff to supplement my income and help me put the last of my kids through college. Some items come from flea markets or estate sales, and some come from around our home, but many items come to me from my extended family of hardcore hoarders. So, the variety really can be vast and unpredictable. Please check back often, because you really never know what I will have from one day to the next! Thanks for visiting and have a great day!