"Dating Aria guitars is a mix of fair precision and historical triangulation. The early guitars did not contain serial numbers, so you have to go by the rough historical outlines here. There are no pot codes. In the mid-'70s serial numbers began to be used. At least for Aria guitars made by Matsumoku, the serial number contains the year of manufacture in the first one or two digits (Y##### or YY####). Thus, a guitar from 1979 might begin with 79####. One from 1981 might begin with 1#####. The scheme becomes less sure after 1987. Some Korean- made guitars use a serial number with year and week indicated in the first four digits (YYWW####). Thus 9628#### would be from the 28th week of 1996. However, this is not the case on all guitars, and some have serial numbers which are not date-coded. "
Tiré de:
http://www.ariaguitars.com/int/00int_main/archives_main.html
avec plus précisément:
http://www.ariaguitars.com/int/00int_main/archives_ebass01.html
Ca vient de slappyto, ca pourra peut être t'aider.
Pour la côte ... euh une guitare qui à 30 ans, si c'était une gibson custom ca vaudrait une fortune mais une aria je sais pas.