Here's my humble submission. K-22 #20,918. Shipped to Kelam Hardware in Roanoke VA on May 20, 1948. I swapped a Model 48 for it in 1972, and felt I got the better end of the deal; mostly because .22 Magnum ammo was $3.00 / box at the time and I could barely afford to feed that model 48. The trade took place in Troutville, not 20 miles from where the gun originally shipped to.
It's not in as fine a shape as many of the beauties shown on this thread, but the wear that's been put on it was mostly done by me; either carrying it on a trapline, walking in the woods, plinking, or more recently shooting steel plates. Best of all, I don't have to worry about getting a mark on it while shooting it. For 40 years it has unquestionably been my favorite firearm, though lately my Pre M-27 has been giving me second thoughts.