Looks like it was a distributor special for Acusport. The only s/n I've had reported is 133-864xx (this info will be part of the revised references. Am about 1/2 done printing these at this time, so looks like a mailing date of sometime next week hopefully).
Kool, and thanks rugerdczr, I am totally not familiar with No. 1s, I have taken a likin' to the old bolt gun. As I mentioned, I started a thread ("question..." on this topic, trying to understand the gun I do have. Yes it is an "R" and I just have not given it much thought until some recent research.