I think its a 4"-8" model# 1-SA, Ser. # 6704. It has been in storage for years but is like new. I used it to cut about a dozen 6" coupons. It is missing the torch clamp (Went to a CNC machine) and only has one set of dogs. I dont know what its worth but will look at all offers. I get home on the 1/20 so cant get it sent by then.