MRC:
The number used by the manufacturer for identifying the item.AQGB
Manufacturer Identifying Number:
All remington electric, noiseless, portablesexcept bantam, cadet, pioneer, portable, remette, scout and streamliner, and all manua models except 10 11 12 16 20 30 50 60 92 and monarch 3, underwood model 150 below serial nos. 7, 881, 200, noiseless, and noiseless portables
MRC:
The name of the manufacturer of the machine for which the item is designed.BZJK
Machine Manufacturer Name For Which Designed:
Remington-rand inc, livetti underwood corp