So would there be a EH103 and EI103, as well as EK103 and EJ103? Any Phase rep know that?
this is not complicated:
first there is the mount type as a letter code, like Doug's post gave: EJ, EK, etc.
then there is another two/three numbers that indicate... year? batch?
then the final 3 numbers are the sequential production # of the back. (and it seems to start at 001, not 100, or at least it did for P45's)
hence the estimate that they are in the 500 range for P65+ Mamiya fits already.
what would be nice is to hear of some early adopter with a P65+ in the low serial # range to confirm.
Phase One has sold 1 x p65+ in Denmark and 4 in Sweden so far!
I feel this suspect information, especially given that it is Phase's home territory.