Archtop Acoustics milestones

1939
The Synchromatic line of arch top acoustics was introduced to considerable success.
1939
American Orchestra 100 shifts over to the Synchromatic line, becoming the Synchromatic 100.
1952
Binding around f-holes and pickguard removed.
1955
Model 100 designation dropped, replaced by 6014 Corsair.
2011
400JV Jimmie Vaughn model discontinued.