From some Curtis information that I have (1949) -if the printer is a 8x10 Commercial Curtis Color Printer is was "designed for engravers, lithographers and professional color work" If it is a Type M Printer it was used for 4x5 or smaller contact negatives that has built in mask and separation filters. I will check and see if there is any other information or brochures around that could shed more light on it. If there are any identifying model numbers on the printer it you could provide it might help track down it's purpose.