swamperbob, I'll be dead honest - with the new super counterfeits that are coming out in the market, weight test, SG test go straight out of the window as they both pass the test. I have two Chinese crown size coins and those are the horror super counterfeits that will be coming soon. These dies are hand engraved and it was only the minor details that gave them away - could have been discarded as varities if one isn't knowledgeable about this field.
Reason why I am suspicious is the following:
1) the lustre is not right. It looks freshly struck but it just doesn't look right. It matches with the lot of counterfeits that I have been seeing.
2 & 3) In those conditions, you are easily talking about 500-800+ dollars for EACH of them! Unless you are insane lucky and bought them cheap and they are genuine, good on you! But chances are, it's not going to happen that easily.
First do the weight test and let us know nuno.
My partial coin collection
http://www.omnicoin.com/collection/gxseriesMy numismatics articles and collection:
http://www.gxseries.com/numis/numis_index.htmRegularly updated at least once a month.