NOS lighter element

[PT'S 70 CST]

There is a GM dealership in my small town that has been in bus. since 1935 and with the government restrictions on GM it has become victim to being closed. My buddy is the parts manager and I have first shot at going through all of the lofts and one old building. Today we went through some stuff and I came home with a NOS 6 lug 4x4 rally wheel about 20 service manuals, a NOS console middle section, and a bunch of odds and ends. Here is my question I ran across some NOS lighter elements, all of the factory ones that I have ever seen has (63 Casco 12v) on them and my buddy said that is what GM used so in all of there lighters. Here is a pic of the what I got and they are all an exact match to the ones used on a 67-72 truck. What are these worth.

Thanks PT