Cast or no cast

[JDub]

Can anyone tell me if this tsuba is casted or forged? 
 

Thanks. 

[Spartancrest]

Hi Jason. From the seam lines halfway through the sukashi I have a strong suspicion your guard is a cast copy of an Owari original design - we would need to see the nakago-ana and seppa-dai of the tsuba to make a better judgement. [that means unmounting the tsuba]

 

https://www.nihontocraft.com/Owari_tsuba_G.htm   - I am not convinced this other example is not cast also, it has some rough spots on the inside of the rim [mimi] and there is a crack on the right near the open hitsu.

http://www.nihontocraft.com/Owari_014222.jpg