I'm pretty sure you will be happy with the gun, but I think it may be an older not that bad non-factory reblue, given the lack of factory date marks. Is that trigger blue? Hammer looks to be polished.
In some of the pics, the trigger and hammer look blue. I'll update once in hand.
For the re-blue the revolver is stamped 2 7 1 B.
Because of its age I will be getting it lettered. I'll know 100% once in hand. This will be my first 44 special!