Hi there, this is my first time on here and with a question you must be sick to death of hearing I'm sure, but I have two .999 silver coins, one says Welcome to Silverbug Island 2015 and is one Troy ounce and the other is a Mexican 1/2 ounce .999 fine silver coion. The similarity is that they both have reverse/obverse upside down to the other side. Does this make them worth more than the price or less? please.
Those would be coin alignment and not medal alignment. https://en.wikipedia.org/wiki/Coin_orientation
First, welcome to the neighborhood! There are two methods used for positioning the dies. One is called "coin turn" where the reverse is upside-down in relation to the obverse and "medal turn" where the reverse is right side-up in relation to the obverse. The US Mint uses "coin turn" for coins (obviously!) and "medal turn" for medals. However, private mints and other countries do not necessarily adhere to the same practices. Chris
