The keys are not stamped with the Key Codes, so they are unknown to us. However, three of the keys (2-Craftsman, 1-Sears) are keyed alike, as shown. The remaining Craftsman key is of a different cut.
Archives
Sears Wood Plane Model 107-37033 Front Knob + Rear Tote + Hardware / MTT
Craftsman – Sears Wood Plane Model 107-37033 Front Knob + Rear Tote + Hardware / MTT. MTT = M ountain T op T ools. OTHER DETAILS.