[Help identify a found radiator cap]

Another radiator cap to identify, found in the proverbial 5 gallon bucket.

 

Height of the cap proper:  1"

Span of the horns:  5.75"

Height at the horn ends:  1.75"

Exterior diameter, at the top: 5.625"

 

Interior diameter:  2.25"

Threads:  fine

The cap responds to a magnet

No venting

It appears intact though the black lines at the base of the horns are problematic.

 

Thanks kindly.  Any help would be appreciated.  

[Identifing an old radiator cap]

8 hours ago, Spinneyhill said:

Welcome to the forum.

 

I think if you read the very first post in this forum (the one that stays there) they ask for one item per topic. Suggest you start your own topic. You cap is unrelated to the other one.

 

Can you show us the underside of it please.

Thanks kindly; will do.