Sold Lombards in the late 70's . The saw red and black was around 79, If it is built like the XL-12 Homelite it is probably an AP-42 or AP-42D Lightening. The D model has a compression release. Parts are sometimes difficult to come by and the engine more than likely has a Phelon ignition.
XL-12 air filters look the same, but are not. Bars, chain are the same as XL-12. Still got a few old Lightenings and run them as back ups. I believe the power head is a power products design as many saws were back then.
85 bucks is a little steep unless a guy wants it for collection or conversation piece, but if the saw is running it is a cutter and solid in construction.:monkey: