What is this Large Socket?

[R Casi]

Made of Solid Brass ...2 1/2 diameter and 5 1/2 long

Please help Identify

Thank You

[Molly]

It is an Offset Hammer Wrench, with the adjectives striking, knocker, slug, slap attached to it.

There would be a handle attached to it.  However, this being said, I have no idea what it's main purpose is....except to work on something big.  :)

[Fred Silva]

more than likely to remove brass hub caps or might be used on early steam heaters

[Craig Phillips / B & C Emporium]

berlyco non sparking hammer wrench some where explosive or flamible so not steel sparks

[R Casi]

Thanks All for Info..

Yes Looks to be Berylco but now cannot find this Style anywhere?

[tomsantiquesetcetera]

I'd guess underground mining, possibly coal. Brass doesn't spark.

[Fred Silva]

Check out water meter and fire hydrant wrenches. 

[R Casi]

Just like this wrench is hard to find?

Thanks for the imput.