A good friend of mine who is an Emerson fanatic but who hates computers recently received a long (really long) awaited knife that he ordered directly from Mr. Emerson. I thought he was getting an ES1M, but when he showed me the knife, it is about the same size as a Commander, wheras the ES1M is significantly larger. The knife looks similar to a Commander, but is chisel ground on the left side with a single bevel all the way to the edge. It is marked Emerson SPECWAR knives with the number 20100 under the stamp. Here are my specific questions. Is this an ES1C? What does the number 20100 mean? BTW, my friend also has a cqc6 and a cqc8 both of which he also got directly from Emerson. He just like the knives, carries them daily and had no idea what they are worth until I sat him down at a computer and showed him what they sell for.