Depends on when it was made.
look on the frame
NO
No published sn data.
1968
Lorcin
There is no fixed or standard length. There are serial numbers of different lengths for different purposes.
It was made by Lorcin, and Lorcin is no longer in business.
Look on the butt.
Depending on who made it, they may or not be published. And, depending on when it was made, they may or not exist. Serial numbers were not required on long arms in the US until 1969.
Serial numbers were not required on long arms sold in the US prior to 1968 so very few companies bothered to serialize their .22's. For some reason, they usually did assign serial numbers to larger caliber rifles.
Lorcin manufactured them. They are now out of business.
There is a white sticker on the underside of my Acer Aspire 5570 that looks like this: MFG.DATE..... long bar code... S/N: a long code with numbers and letters (THIS is the serial number).... SNID: a long code of numbers (this is NOT the serial number) I will repeat, the S/N code IS the serial number...not the SNID.