Some kind of huge copper bottle cap???

[pcolaboy]

Today my son and I were walking along a beach on the bay that has had it's share of erosion in the past few months and we found this interesting piece. It's made of a copper alloy (based on the petina) and I think it's pretty obvious it was used as a crimped cap for some type of container. I took photos with the item on top of a standard CD for scale.

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The area it was found in has had a good share of settlement and industry from the Spanish colonial era right up until present day. We also found fragments of salt-glazed porcelain nearby that I'm pretty certain are from the mid-1800's.

Any ideas on the object and the era are appreciated.

Pcola

 

[pcolaboy]

Still no ideas on what this could be? Need better pics to help identify?

Thanks

 

[DCMatt]

Maybe an end cap for a post?

DCMatt

 

[Bigcypresshunter]

I think its a large crown cap for a wide mouth glass jar. Maybe before threaded lids were popular. Thats my guess. Ill have to look in my glass book.

The crown cap was patented in 1892.

 

[jopher]

I think its a large crown cap for a wide mouth glass jar. Maybe before threaded lids were popular. Thats my guess. Ill have to look in my glass book.

The crown cap was patented in 1892.

I had an idea along the same lines....maybe you know?
I had read once that old glass carboys had a stopper(cork) as well as a metal cap over that. Just a thought.

 

[pcolaboy]

Thanks for the ideas. Just had me stumped for a cap of this size.

 

[Breezie]

BCH nailed it . . .reminds me of the old song Chug-a-Lug: Grape wine in a Mason Jar, homemade and 'brung' to school . . . ..Breezie

 

[Bigcypresshunter]

I was just guessing. I cant find it. http://www.antiquebottles.com/fruitjar/fame.html