ricky bass serial number

[Al Heeley]

Ricky bass Serial Number
A guy brought a nice 4001 in for wiring check, looks like a fault on one of the jackplugs where the mono is linked to the stereo jack.
I wanted to check the manufacture date via serial number, but it doesn't appear to have one.
Where are ric serial no's normally located?

[Doctor J]

On the jackplate itself.

[Al Heeley]

ok thanks, i was searching the heel and the back of the headstock

[Shockwave]

Failing that, some rickys have one under the neck pup.