Well, first we need to know if it is from Austria An Austrian State, and if so, which of the 21 coin issuers Bohemia A German State, and if so, which of the 61 coin issuers Hungary Lichtenstein Poland Salzburg A Swiss Canton, and if so, which of the 26 coin issuers Switzerland Transylvania Austrian Netherlands as each of those jurisdictions used the kreuzer/kreuzers denomination in the 18th Century. Next, we need to know the condition of the coin, in numismatic grading terms. Clear pictures of both sides, with an indication of the coin diameter, would provide most of the needed information. A quick glance at the 18th Century volume of the Standard Catalog of World Coins leads me to believe that you may have coin worth somewhere between a few cents and a few hundred dollars.
