I'm going to sort of say uncle with the following quibble.
The description for Charles Maas that ashdigger posted above states that they registered the following makers marks: CM without a frame, CM within an oval frame, CM within an oval frame below a crown, CM above MM. No CM&C, not mentioned, nada, nothing, not evident.
That the pipe used to ID a Charles Maas pipe (the very same pipe that started this here thread) is stamped with a makers mark that isn't listed as a registered mark doesn't legitimize the stamp, or the attribution to Charles Maas. It could just be compounding the mistaken attribution.
But, given the case it's possible, though not proven.
The description for Charles Maas that ashdigger posted above states that they registered the following makers marks: CM without a frame, CM within an oval frame, CM within an oval frame below a crown, CM above MM. No CM&C, not mentioned, nada, nothing, not evident.
That the pipe used to ID a Charles Maas pipe (the very same pipe that started this here thread) is stamped with a makers mark that isn't listed as a registered mark doesn't legitimize the stamp, or the attribution to Charles Maas. It could just be compounding the mistaken attribution.
But, given the case it's possible, though not proven.