It definitely is a No Dash. The stainless front sight ramp and Stainless rear sight were changed out of production on the the early models. A change to typical blue steel which was milder to the tooling was made.
This is a very early production gun.
There were no dash marks in the Serial number.
However a dash mark followed by a number shows different production
modifications made by S&W. In the model number.
This is a beautiful Smith, and a very early gun in the production run.
Those look like the 4ft cubes.
I really couldn't figure anything from the other pic.
Do you have any that are Cracked. I have used these,
I cut the top out to store large parts in on my pallet racks.
If so how much for busted ones?