Very much like one I once had years ago and sold Rick, not sure on the name Mak for these or where it actually came from as it is not a regular name used in south east Asia for these type tool - weapon as far as I know but seems to be a western term for them, or at least they are not called mak in Thailand or the Khmer regions, the correct term for them in the Khmer regions of Thailand and Cambodia is P'keak or kokok, depending on type, but maybe the term used for them in Vietnam where they are also used is mak ??, they are not used in Burma so the name mak can not be Burmese.
That said I am always glad to hear from anyone with any ideas or other names for them, and a translation of the mark on mine would be interesting for sure.
Snody