What is that, a chop-roofed Townsman?

I love these cars. Don't see many of them around anymore. They're actually called Chevy Nomads, but are based on the Bel Air as you said :)

The base model is still the Bel Air and will be on the fins on a normal one wagon and sedan alike, the wagon just gets Nomad tacked on to distinguish it from the coupe and sedan Bel Airs... So it would be perfectly okay and proper to call them a Bel Air Nomad.

The Nomad was a separate model from the regular wagons and cost more than the convertible. It had its own roof, glass, tail gate, and chrome. It shared the doors with the sport coupe with unique curved glass. Because of the price, they are extremely rare. Restored cars with desirable options go for well over 6 figures. You will be hard pressed to find any other '57 wagon for that price.

Other wagons had unique names (Townsman, Handyman etc). But were all variations of the same wagon with different door and trim combinations.

As far as the passenger car, the base model was the 150, middle was the 210, and the top-of-the-line was the Bel Air. There was also a "Delray" trim option between the 210 and Bel Air. The 150 received minimal trim with '55 style fin trim. The 210 received more trim but shorter fin caps and empty side trim. The Bel Air had the full fin trim (top and side) as well as gold louvers and rubber dagmars.

This wagon was most likely a base model four door with it's framed doors. '57 Buick grill. Can't identify the headlight trim off hand.

It looks so different without the side cladding chrome and fin details, but still a classy and practical cruiser. Always nice to see wagons get some of that custom loving. Gotta love the wagons. ^_^

Beautiful paint job

these look so long and comfy :3