Here's something that I found online posted somewhere:
California Black Plates and built in Van Nuys on Dec.23,1968,vin # 124379Lxxxx
So, IF you are looking at this as I am, X to YOW really moved quickly from late September to December!
If a 3-4 month shift in plate alpha's moved this quickly, a ZAA000 could have occured around late March???
Hope this helps....
