National s/n decoding?

[toshik]

I tried search and did not find anything on the subject. Can Matsushita s/n be decoded in terms of date of manufacturing? For example Pioneer first letters mean the specific year and month of production.

 

[toshik]

Can I ask to post your National or National Panasonic s/n-model number-motor date (inside the battery compartment and on the motor), let's say from beginning of 1980-s.
It's 10-symbol looks like 1ABCD23456
Looks like the model/date are hidden in the first 5 symbols, while the remaining 5 digits are actual s/n
If you don't want to post your s/n for some reason, you can PM it to me I won't post it anywhere just analyze.

 

[toshik]

And the thread died

 

[trippy1313]

I never saw this. None of my Pannys are apart, but I'll try to look on my battery compartment when I can.