i have this beautiful coin / medallion but I do not know if it's real. It scratched and left a gold mark on the surface, pinged for a very long time and weighed to 13.9 grams. However, a mr. Cash for gold expert told me all was real and acid tested it and everything. Then all of a sudden after a price was established he put it on some type of scale looking device that detected it as not real? The same happened to the smaller gold coin I brought in, which he had ripped out of the gold ring band it was soldered into. I am not sure about the small coins weight but that one is iffy to me. He bought the gold ring band for 70$ though.
Welcome to the forum. My guess is it's fake. The devices are not defined enough for the coin to be real, the date isn't even clear. The bezel doesn't look real either, but that coin is really bad. Look at the link below. http://www.ebay.com/itm/AUSTRIA-4-D...924630?hash=item58a0dc7596:g:4ckAAMXQVT9StY06
It is a common bullion coin, almost always a later restrike and has been worn as a pendant for years which may account for the apparent wear, although the pictures lack definition. The mount is typical of the type of mount that was used to make these coins into jewellery and should have a carat mark on it somewhere. Cash for gold shops pay very poor rates for gold, if it is right then you may do far better elsewhere. I'd not give up on it immediately. The best test is with an XRF scanner, which will analyse the specific elemental composition of the metal.
Here's a graded one I own and it's a re-strike too . PCGS Coin Information PCGS # 21092 Date, mintmark 1915 Denomination 4 Duc Variety Restrike Country Austria Grade MS64 Holder Type Standard Population 16
Was that the weight of just the coin, or the weight of the coin and the bezel combined ? I ask because the coin, all by itself, should weigh 13.9 grams. So if the weight of the bezel and the coin combined was 13.9 grams - then yes it is a fake coin.
Then the coin is most likely genuine. As for it's value, it's bullion value - about 10% less than the current spot price.