Ok, it's got a swaged SR Apex 5 crankset, what appears to be a SunTour Cyclone deraileurs (?) and the North Star headbadge. That would place it late 1970s. If you want to narrow it down further, there will be component date codes on the back, which you can decypher using the info on the components page of the Vintage-trek website. Please post the results. TIA.

As for the model, I can't provide anything definitive. It's better than a LeMans but not as good as a Semi-Pro. Possibly a Super Lemnas or a Super Elite?

Stangely, I saw a very similar bicycle two weekends ago at a regatta. There was no model name and the only thing the owner rembered was buying it in the late 1970s. I was able to confirm 1978 based on the serial number. The frame did have a Champion butted tubing decal. I wonder if yours is the same. Can you check the diameter of the seat post? It should be marked, though you may have remove the post. TIA.