Picked up a Model 64 yesterday. I thought it was a no dash, but there is a 1 directly under the 6. Is this the usual way the dash-1 is displayed?
It is a four inch pinned heavy barrel. The serial number is D6401XX, which is in the 1973-1974 serial range.
It came with a really nice set of diamond magna stocks. These do not show holster wear. I will replace them with the newer style when I finish cleaning the gun.