Dating A12 back year of manufacture

[ted_smith]

Just bought an A12 back to supplement my existing back for my 501CM from FFordes here in the UK.

I want to date the year of manufacture of the back. The calculator here (http://www.hasselbladhistorical.eu/HT/HTDating.aspx) seems to be for lenses? When I put the code into that it reports 2011, which can't be right?
The code is 30E16184. According to the write up, this may correlate to 1994 (E = 9, 1 = 4)

Any ideas?

 

[bdial]

I get 1994 if I put "EI" into the upper calculator.