It doesn't get much better than this. Bought from a former airgun dealer around 2001 for 1K with five clips. Only 10 were made. Classic style stock with a 8" barrel in mint condition. FAC, and topped with Leupold 3-9x33mm scope. Don't know why there is only one scope cover but one will be added.
Cannot find a picture of an Ultra K on the web, so here is a confirmed specimen in the US. This is the only discussion I could find on this limited run:
http://www.airgunbbs.com/showthread.php?738123-Valuation-SLR88-carbine
More airgun porn-Love it! From what I've seen of your collection a guy could spend a couple days just shooting one group from each gun. I have a mild case of G.A.S. (gun acquisition syndrome) myself but being a tad "economically challenged" and working full time seems to keep it at bay. Thankfully there is only one airgun show in California.