Samick serial number dating
Here is the breakdown courtesy of Ibanez Collectors World.
Until 1977 Maxon used 5 digit serials: 1st character is a production code (1,2,3, etc., maybe related to different production location) 2nd character indicates the year of production (2=1972, 3=1973, etc.) 3rd character indicates the month of production (0=January, 1=February, ...
If you're trying to figure out what model something is from the serial number, figure out what year it is then go to the catalog library for the corresponding year [or year before or after] to find the model.
There is no master list to correlate to a model number, these are consecutive serialized numbers only.
Where things go astray is when the Jem line went to AANJ in 93'.
This is where you start seeing consecutive numbered plates on the remaining regular joint models that no longer indicate year.
- Cort serial numbers are denoted with a C prefix followed by either 7 or 8 digits.
I'm not sure what year the changeover occurred but using the formula it will be easy for you to tell.
This form of serial numbering is still used today on guitars where the number is impressed into the back of the headstock.