Hi there,
1st-time poster :-)
(I guess most 1st-time posters probably ask similar types of questions, so please excuse me if this has been asked before)
According to a 3rd-party report here
http://www.harpamps.com/micKspeakers/JBL-dating.html
about what Harvey Gerst reputedly said some time ago, there is not much you can tell about the date of manufacture from looking at a JBL D130 serial number
I have two Fender Signature JBL D130F (Orange Frame) in a Dual Showman Reverb cabinet (cabinet serial number 1277). I understand the cabinet dates from the early 1970s. The serial numbers on the speakers are 14122 and 14125.
Can anyone shed any further light on when this pair of D130F might have been made? (They still work exceptionally well by the way)