by VintAxe » Mon Jul 31, 2006 9:12 am
hi danelectro2501,
National/Valco serial numbers have been listed in Bob Brozman's book "National Resonator Instruments" (1993).
They have also been posted on the Vintage Guitar Guy's website.
The focus of the page is resonators, but if you scroll down a bit you'll find Airline numbers. Hope this helps. sb