Possible Shimazu pot, need help identifying

So I believe this pot is from the Shimazu clan in feudal Japan, the exterior is slightly cracked/faded and the bottom of the pot is rather worn. The design makes me think it was made by the 'Genuine Samurai Co.' but the markings on the bottom make me think otherwise. Any help identifying is appreciated.

 

The right bank of characters say Kinkozan (the maker) in the alternate form, can't see those on the left well enough in the images, but the last character is 'made'. This way of spelling Kinkozan usually shows up on late period examples where the quality had taken a huge dip due to the economic issues of the period. It dates to the inter-war period, 1920's or 30's. It is the Shimazu crest, but that didn't mean a great deal by the period this was made.

 

Here is a better photo if it helps.