https://en.numista.com/catalogue/pieces49447.html
I put 1486 date in the Search on here, and that was the last of the 6 results.
It is a token, made by visitors themselves to the City of Hall mint in the Austrian Tyrol region.
http://whc.unesco.org/en/tentativelists/5801/
Quote: Since 2003, with the opening of the Mint-museum in the Castle of Hasegg, the production-procedure of minting can be shown to visitors exemplified by reproduced rolling-mills.
The one in the first link is copper, and I have seen bronze, and silver-coloured as well.
Here is the page with details of the original Guldengroschen coin ...
http://en.wikipedia.org/wiki/Guldengroschen
There was also a 1953 silver restrike, size 41mm
http://www.vcoins.com/en/stores/coin_kingdom_llc/181/product/austia_tyrol_guldiner_1486_commemorative_official_beautiful_silver_restrike_1953_unc_toned/326972/Default.aspx