Hasselblad Viewfinder HC-4

Hi
Can anyone give an approximate date of manufacture for the Hasselblad HC-4 Prism Viewfinder. I'm guessing between 1980 to 1985. Is this correct?
Thanks for any advice
M

To determine the date take the first two letters of the serial number and use:
VHPICTURES
1234567890

ES ==> 1990
SH ==> 2002

Steve

Sirius Glass said:

To determine the date take the first two letters of the serial number and use:
VHPICTURES
1234567890

ES ==> 1990
SH ==> 2002

Steve

Click to expand...

Hi Steve, Thanks for your advice, I am aware of the the Victor Hasselblad dating code, but should have added that the viewfinder in question is not in my possession and I can't check the serial number.
I was looking for some general information to determine the year this particular model of 90 degree viewfinder was first available. Any clues most welcome.
Thanks again

Max