It’s a canon, but what sort?

[Silver Shield]

IMA , had a googolplex of 18th century stuff they got out of Katmandu, in Nepal some years ago. This Cannon looks very similar to those short stubby 12lb cannons they had . Should have about a 5 inch bore ,. I know recycled cannon sold to Asia some times had markings covered or removed . The Bore reminds me of some guns that have a steel sleeve inserted into barrel to be safe to shoot . the bore face just looks like some bronze or other metal has been hammered over something to hide some feature . They sold for pretty good amount . I'm pretty sure that's what this Cannon is . IMA thought they where recycled Napoleonic naval guns , maybe the plate is hiding something as it is not a normal feature on guns of this kind . Small Carronade is what it is if European , but if Asian Cast .. just normal odd each one different kinda stuff .