Poniżej odpowiedź z serwisu CA
"Thank you for contacting Cambridge Audio.
I am sorry to see we missed your message.
Yes, you can check the month and year that the product was made via the serial number.
The third set of characters in your items serial number is its date code.
However, newer codes must be decoded by subtracting 50 from each double digit.
If the third string of characters in your item's serial number is "7153" for example, you would want to subtract 50 from 71 and then 50 from 53.
That would leave you with "2103".
This makes the date of production - 21/03 or March of 2021.
If you have any questions or just want me to double check, please let me know your item's serial number.
Sincerely"
Także reasumując, miesiąc i rok produkcji można odczytać z trzeciej linijki numeru seryjnego.
Odpowiedź dostałem błyskawicznie.