Here is a Atcoa sander that works good. It needs some cleaning and a name is stencil on it.
Vintage Atcoa Viking 15" Dual Piston Pneumatic Straight Line Sander (PARTS ONLY)
ATCOA Viking Dual Piston Straight In Line Filer / Sander Vintage- Tested
ATCOA VIKING 15" DUAL PISTON STRAIGHT LINE SANDER
ATCOA Viking Board Sander
Atcoa (1283-SL) Viking Dual Piston Straight Line Sander
TESTED VINTAGE ATCOA Heavy Duty Straight Line Compressed Air Sander - Model 2D
