Metal Miniature ~ 9" Field? Cannon -Tilt Brass? Barrel (for desk?) Weighs ~24 oz

Description

AS SHOWN:  Metal Miniature ~ 9" Field CannonTilt Brass Barrel (for desk?) Weighs ~ 24 oz
Previously owned.  Just purchased 7/3/21.  While taking photographs, I noticed that device holding on wheels are different.  Previous owner must have changed or repaired it???
I did not see a similar one on EBAY.  I do not know much about this item - I probably should not buy stuff that I don' know about.  When will I learn?
Please view photos to determine if this item is right for you.  Thanks for looking.
I am not sure of the combination of metal used in construction - PERHAPS brass and cast iron????