Identify Johnson barrel

[Win95405 0]

I presume that the barrel illustrated is not an original 1941 Johnson barrel, but one converted from another military barrel. It is 24.25" long from muzzle to the end of the rear bushing. The profile is different from original Johnson barrels that I have seen. The only marking on it is X 2 H (can't distinguish). Confirmation that it is a converted barrel and any information the barrel used for conversion will be much appreciated.

 

Edited February 5, 2018 by Win95405
delete duplicate photo