The tag for this coin attributes it to Sigismund 1439-96, but the attribution has been marked out and edited to Maximilian [1496-1519]. The tag attributes it to Saurma 345.
The coin is silver 24mm, and weighs 2.9 grams. (The coin rotation is neither medal nor coin. The cross at the top of the obverse aligns with the end of the cross between I and R of TIROLIS.)
The legends of Saurma 345 match the coin. For the 6 kreuzer (or Sechser) of Maximilian in Saurma, the reverse legend begins "GROS COMITATIS" instead of "AC COMITATIS".
Saurma 345 is listed as 24mm; the Maximilian sechser is listed as 22mm.
Is this Sigismund or Maximilian? Is Saurma correct, or has newer information revised it?
http://www.elfreeman2.com/t18/5i17o.jpg
http://www.elfreeman2.com/t18/5i17r.jpg
You have my permission to use these photos for the Numista catalog. Please attribute them to elfreeman (my eBay username).

