Hi Guys, I am new to TB and was hoping someone here could help? I am considering buying a used Ampeg SVT - CL, however, I am having an issue identifying the serial number year it was made. The serial is: BJND800153 This is an SLM amp and made in the USA. The 4th digit represents that it is domestic made, but the 5th digit is supposed to be the year it was made. A=1988,B=1989,etc... I emailed ampeg and they provided me with this information which I already knew. I was wondering if anyone has a similar experience and knows what year this was made? Thanks in advance for the help, I look forward to participating in more of these forums in the future!!