Welcome to the Forum
Congratulations on acquiring a fantastic revolver.
There have only been 6 variations of the 8 shot, model 27 ever produced
All 6 in this set are the same serial number with a different prefix
The 4" and 6 1/2" blue models were manufactured in 2000
The 3 1/2" and 5" blue models were manufactured in 2006
The 3 1/2" and 5" nickel models were manufactured in 2007
These are some of my favorite model 27s
Did you go to the gun show in Evansville last week?