I have two straight necked thermostat housings with the same part number but do have a few differences. One has has the part number on the round dome covering the t-stat and has raised bolt mountings thicker than the base. This one has a pronounced casting ridge separating the dome. The other has the part number on the mounting flange and has two recessed pockets cast into the housing along side the bolt holes. Both have been bead blasted and primed. Thinking I may keep one but don't need both besides the one currently on my '57.

I also have a heavy cast iron straight neck thermostat housing with the numbers 1595 cast into it? No idea about it at all but appears to be same basic configuration but is cast iron.

Any info on either of the three housings would be appreciated. Also a value would be helpful. I certainly don't need all three besides the one on my '57.