They are great guns, we say that about so many S&W models but it's true. The 648 compared to the 48 is like the 17s/18s compared to the 617. Here's one scoped with some black after market finish, I have no idea why. I usually put scoped S&Ws back to their original configuration but this one shoots so well I've left it as I found it. This one is about the same timeframe as yours; SN BFA0675.
Great package you have, enjoy it.
Jeff
SWCA #1457