I too have the same package as you found but it's then inserted into a larger crappy looking gold'ish frame. It was intended to be installed in a late 70's MoHo but when the company went bankrupt a lot of this stuff ended up in former employees basements and garages. By 1980, when I bought mine at a garage sale, all kinds of this stuff was showing up on driveway sales all over the city. For $2 I didn't think I could go wrong and have had it ever since. I've been thinking about mounting the gauges themselves in the Flying Cloud but just can't find the right spot yet. Actually, just the thermometer and barometer.
Other things included a four seat patio table, the fold up type that everyone now buys in plastic. Ours is metal and wood, with patent pending on it. It appears to be quite old and the couple we bought it from were garage sale'ing all their old camping gear as, at 75, they'd decided sleeping on the ground wasn't fun any more. Paid $10 for it. It's almost too heavy though to haul around in the trailer but it suits the vintage theme so depending on where we are going (like a TCT event) we'll haul it along.
Also got a complete Reese hitch, 1,500 lbs, and I mean complete. Included the sway bar, the hitch for the car (Cadillac), brake controller and everything was still in the boxes and never installed. He totaled the car before he got the trailer home so they bought a truck and it came with everything. The stuff I got at the garage sale had sat in their garage for quite some time. I had to go large on that and paid $30.