The serial number is engraved beneath the shutter curtain, and this let you know when the camera was manufactured. The formula is as follows:

Apply each number of 1,2,3,4,5,6,7,8,9,0 to each letter of V,H,P,I,C,T,U,R,E,S (Victor Hasselblad PICTURES).
In the figure above, this camera has the letters of "CT" at the head of the serial number.
According to the formula, "C" is "5" and "T" is "6", means this camera was manufactured in 1956.