28/29 gas cap marking question (ID help)

[Brubaker]

Two caps with consistent vertical markings all the way around. A telltale sign of a reproduction?

 

[jw hash]

they are both old cheap reproductions with a vent hole in the top.

 

[Brubaker]

...Thanks for the reply John.

 

[Mountain Dew]

So....Is the vent hole in the top the give away sign of a reproduction?

 

[katy]

Are they brass or steel?

 

[Brubaker]

steel (unfortunately)

 

[1955cj5]

So....Is the vent hole in the top the give away sign of a reproduction?

Original gas caps were vented but not with a hole in the top...picture is of a 28-29 cap.

Original radiator caps were not vented. The radiator vents through the overflow tube.

Both would have been plated brass.

The Judging Standards have a whole page (15-8) of line drawings of the different styles and years.

 

[katy]

Both would have been plated brass.

I wondered whether the originals were brass or steel, I suspected brass, now I know, tnx.

 

[jw hash]

all of the originals that i have seen were brass. and did not have a vent hole on top