Ideas on age of shotgun shell headstamp?

[OldCop135]

I found this headstamp in a park that dates back to the mid-1800s; I emailed the company in London several months ago but they haven't replied.

Any ideas as to a manufacturing date range?

 

[GA_Boy]

No idea of age.
Marvin

 

[garren]

You may have already found this site during your research - Shotgun
It's one of my favorites for shot shell headstamps. On some companies they narrow the dates down pretty good.
One looks real similar to yours on page 2. Unfortunately it only gives a date range of 1824-present.
Maybe the company will email you back.

 

[austin]

You may have already found this site during your research - Shotgun
Its on of my favorites for shot shell headstamps. On some companies they narrow the dates down pretty good.
One looks real similar to yours on page 2. Unfortunately it only gives a date range of 1824-present.
Maybe the company will email you back.

Dude, you be a Texas genius