Hello! In order to make the things easier,first please provide of each coin also their weight & diametre. If you can determine,also the metal of each coin.
Now,for what I see for the moment:
1) the first coin(up/left) is ment to be a roman imperial coin... But,I strongly doubt its authenticity by its aspect and colour: should it be minted in gold?! I don't think so,it seems gold plated. If this is the case,it is surely a fake!
2) the second coin(up/right) is also a roman imperial coin,this time minted in bronze,very nice,good preservation but I cannot bet on its authenticity for sure! (antique coins are not my domain of ''expertise'',sorry!). If genuine,it is a nice add to a collection
3) the third coin(down range/left),also bronze imperial coin,is much more used in circulation but this + its aspect makes me quite sure of authenticity.
4) the fourth item(down/right) is not a coin but a medal,it has brocken ear ring. From the photos you gave us,I cannot identify anything about its origins but it is very likely a somehow genuine item...
Hope these helped you a bit...
Sorry,I now just saw the second bunch of photos of the other sides of the coins and I come back with revised and much more correct information!:
1) & 2) Both '' coins'' are not real coins,not genuine for sure and not too old also. They are somekind of modern souvenir medals/tokens for the remind of ruling years of 2 roman emperors. I don't think that,as such,the 2 items are valuable for collections
3) this is,in my opinion,a genuine bronze roman imperial coin... but in a not too good preservation. &
4) as I said,this is a medal,genuine for sure but not very old (it has the year 1914 on it!) and also in not very good conservation(partially,legends are rubbed off). I cannot say its origins...
Sir or Madam --
Here's a little more info on the Roman coin that Andi identified.
It is a bronze As (the denomination) from Tiberius Caesar, with a picture of an oar on the back. Below is the description of my pictured coin, which sold to a collector for $235 US dollars. Your coin is in far worse condition, so it would probably sell for $50 to $100.
==== auction description:
Rzeszów Auction House > Auction 9 Auction date: 9 April 2022
Lot number: 2135
Price realized: €216 (Approx. $235 / £181 / CHF 219) Save this lot
Roman Empire, Tiberius As
A natural, circulating example.
Obverse: head in a laurel wreath, left, legend:
TI CAESAR DIVI AVG F AVGVST IMP VIII;
Reverse: oar, SC on its sides, legend around it:
PONTIF MAX TR POT XXXIIX.
Bronze, diameter 27 x 28 mm, weight 10.4 g, axis 7 h. Reference: RIC 64
ancient, antike Rome, Roman Empire Roman Empire
Starting price: EUR 65