obsessed with acquiring a small mahogany body guitar (an M20 or yes, even a Martin 00-15).
If you're talking about that little Martin 00 they sell for around $700 new, I thought the one I saw was a good buy. Sweet little guitar, I took my F 20 in & played it in the same room. Martin fingerboard was wider & easier to play clean, I still came home feeling happy with what I have. Thank you very much since after having mine repaired, I have rea,l close to a thousand invested .
I've never seen an M 20 recent or otherwise but seems to me the later reissues have bigger headstocks, longer scale lengths & maybe a wider fingerboard.
To my way if thinking the overall length would be an inch maybe two longer. Not a big deal but seems contrary to the small guitar objective.
Odds of finding a reissue not needing work might be better & they often come with nice correct cases.
F 20's with the spruce top originally listed for $5.00 or $10.00 more than M 20's