This engraved Tobacco has an unlisted perf (pinhole and/or pin roulette) and is unlisted as far as "Mexico's Revenue Stamps, An Introduction to the Revenue Stamps of Mexico". Does anyone have a reference to this perforation method?
Guess: In my experience, these are "pin perfs" The exact method / machine used is beyond my knowledge, but I found a similar stamp in 2014, when I was searching for a similar shaped revenue from Durango. Image not mine.
I've never read on any forum, the method used by countries (Turkey esp) when pin perfs exist. The stamps here could not be "sewing machine" as the part punctures are too close together, this type could also occur with blunt perforation pins?