The "Red Seal" engine was made by Continental. Continental engines were used almost exclusively in one class of Plymouth....I want to say the HL series, but could be wrong. I believe all the other series used other makes, although Continental may have been optional.
Continental engines were highly regarded as industrial power. They were used extensively in farm equipment (esp. Massey-Harris and Co-op tractors), in Diamond T trucks, in Star cars, in Aeronca airplanes and lots of other things. They were thought, in the farm community to be among the longest-lasting of all and a good many are still in service. Interestingly, the Continental Engine Co. is still in existance, as a specialized manufacturer of aircraft engines.
A question posted to the Yahoo "Railcritters" group could probably get definitive information on the Albion Critter.
J