4.5 inch Howitzer Shell. - Need an ID

Looking for a positive ID on this shell… Any help is appreciated.


‘British’ 4.5" Howitzer Mk. V shell. Made from forged steel. Appears to be manufactured by Harrisburg Pipe and Pipe Bending Company, USA. The transit plug appears to be non standard.

Are there any stampings on the side?

Empty weight is 27-lb, 10-oz
Bursting charge 4-lb, 7-oz, 10-dr
Thus, if it weighs more than 32-lb, there could be cause for concern.