Welcome to mausercentral forums!
The M1912 was made by Steyr and was exported to Mexico, Chile, and Colombia before World War I intervened. According to Steyr records, 15,002 M1912 rifles were produced for Mexico during fiscal year 1912-13. For all of our proximity to Mexico, rifles and bayonets from Mexico are fairly scarce in the US. The M1912 is a M98 action, much stronger than the M1895 rifles it supplemented. Being a M98, the Steyr M1912 would not mount the existing M1895 bayonets, so a special bayonet was produced. Here's a link to a past thread with pics of a M1912 bayonet produced by Steyr for Chile: http://mausercentral.com/forum/viewtopic.php?t=20044
I'd love to see some pics of your rifle. These don't turn up very often.
| Bayonet Collector's Network (BCN) | Society of American Bayonet Collectors | Life Member NRA | C & R FFLFollow us on Facebook! facebook.com/worldbayonets