Electra guitars and basses have a model number stamped along the back edge of the body. Model numbers are printed in a standard 17 or 17-18 format. Try a number with two lowercase "L"s and three lowercase "T"s. Misspelled model numbers (A-G) are accepted. For example, a 1978 Sonic Lumen amp is serial number DE40501, which looks like the standard serial format but for the missing "A"
The numbers along the neckline. The serial number on the neck may range from four digits to five digits or on an electra, seven or more digits. The first digit is the week of manufacturing. Odd-numbered week numbers are for the neck pocket. If the serial number is on the heel of the neck, look for "date code" if it exists. If on the neck, look for "area code" such that DE,MD (Eastern Docklands) would be a DE serial number while a DE7903 serial number would likely be made in Southern Maryland.
Here are some serial numbers with the expected years. (For simplicity, assume they are all between 2013 and 2016. If not, look for the year in an online Fender index or search by serial number using sites like Guitarz.com. You're looking for matches between what you see and what I've listed.)Note: some serial numbers have more than one '00' in them. You may have to put these days in between two dashes, such that `04-00-00` is acceptable, and you may have to use dashes instead of spaces: `25-01-00-00`.
Come to think of it, the same problem exists for Standard Guitars. Anybody have a good link for Standard guitars? I found the old CTS web site and decided not to buy online since I didn't care enough about it. But any links for the S-models would be welcome. d2c66b5586