I picked up a Model 28 with a 6" tube a little while back, and I was curious as to approximately how old it is. It's been refinished (horribly so, too) so it's no looker, but it's mechanically sound and has a beautiful single-action trigger. It's my first wheelgun and I'm no expert on the subject... I did however find what appears to be the serial number on the frame which reads 24400. There's no model number anywhere on the gun, just the ".357 CTG. HIGHWAY PATROLMAN" on the right side of the tube. So, are there any Smith experts that might be able to give a ballpark estimation as to the age of this piece?