1. S & W Model 29, 4"
2. Ruger Mk. 1 Bull Barrel
3. Springfield Armory 1911a1 (NM frame), .45
Those are the only handguns I've ever bought at retail, and I still have them today. I also bought a Ruger Vaquero .45 when they first came out, but I sold it.
Everything else I have was bought used, many were BNIB.
So, to round out the list:
4. Kimber Stainless Target 1911, 9mm
5. Colt Government Model Mk. IV, Series 70, .45