Two silver coins are looking strange to me.The first is holed and weighs 1.06 g. It looks Byzantine. The second weighs 2.97 g. with obverse reading ANTONIUS. Reverse also shows another male figure. I know such a coin could be very expensive, if genuine. If not , I think that counterfeiters have reached their highest point of forgery.
I think that these are the same dies but used for gold. Here is the fake report I created in 2008. http://www.forumancientcoins.com/fakes/displayimage.php?pos=-5793
Same dies in silver and the fake report from 2007. http://www.forumancientcoins.com/fakes/displayimage.php?pos=-3480
Your first coin is a Venetian soldino from the 15th or 16th century. The reverse legend reads "LAVS TIBI SOLI", the obverse shows St Mark and a kneeling doge. Since I can't read the obverse legend on your picture, I can't tell you the name of the doge it was minted for, but you should be able to get there with the coin in hand and some online research. Here is some basic info on the denomination. The reverse legend on your coin is a bit strange – usually, the break in "TI–BI" is at the feet and not at the head of the standing Christ figure. I don't know enough about the type to tell whether your coin is a variant, a contemporary imitation, or a modern fake. I'd consider the latter rather unlikely, but you would have to do more research.
Venetian coins, the trade coinage of their day in the eastern Mediterranean, were often imitated in the east. It could well be a contemporary imitation.
