Walther PPK 22LR Date of Manufacture Determination

[passengerseven]

I would like to determine the year of manufacture for a PPK 22LR, serial # 130###LR, made in West Germany. There is a crown with a small 'N' under it stamped on the exposed barrel in the ejection port along with an elk horn and the letters 'HH'. Grips are black, two mags with black finger rests and it came in the original Walther black plastic box. The original instruction manual is not date coded.

I am thinking early 70's perhaps? Would like to hear from the experts. Thanks.

 

[MTF]

Walther used a letter code for production dates, starting with A=0. So: A=0,B=1,C=2,D=3,E=4,F=5,G=6,H=7,etc. Your gun was made in 1977.

 

[passengerseven]

Useful to know the date code scheme, thanks for the help.
P7