1) Hungarian silver Denár - Zsigmond (1387-1437) with a interesting error, the coin was struck twice (swap 20$, sell 10$):


https://en.numista.com/catalogue/pieces46913.html
2) Two Hungarian silver Denár - Zsigmond (1387-1437) (swap 15$ each, sell 8$ each):


https://en.numista.com/catalogue/pieces46913.html
3) Hungarian silver Denár - Miksa (1564-1576) (swap: 20$, sale: 10$):


https://en.numista.com/catalogue/pieces22141.html
4) Hungarian silver Denár - II. Mátyás (1608-1619) (swap: 20$, sale: 10$):


https://en.numista.com/catalogue/pieces28248.html
5) Hungarian silver Denár - II. Ferdinánd (1619-1637) (swap: 20$, sale: 10$):


https://en.numista.com/catalogue/pieces47623.html
6) Italian states: Venice 2 Soldi, 1 Gazzetta - Isole Del Levante (1710-1797), This coin was specifically struck for the Ionian Islands, which were a Venetian possession from the 14th century until 1797. and is quite rare, (swap 40$, sale 25$):


https://en.numista.com/catalogue/pieces85084.html
7) Italian states: Venice 1 Sesino - Marino Grimani (1595-1605) (swap 40$, sale 25$):


https://en.numista.com/catalogue/pieces124406.html
8) Ancient Rome silver Denarius Caracalla (swap: 40$, sale: 20$):


https://en.numista.com/catalogue/pieces37597.html
9) Ancient Rome commemorative VRBS Roma, this one is in beautiful condition with a lot of details left (swap: 40$, sale 20$):


https://en.numista.com/catalogue/pieces31093.html
For other medieval and ancient coin please check my swap list. I took the pictures with my phone and if anyone is interested in the coins but wants better pictures please let me know and I'll try to make some better ones.
Other then those I also have:
10) Austrian 2 Kreuzer from 1851. with the rare G mint mark (swap: 40$, sale 30$):


https://en.numista.com/catalogue/pieces25058.html
11) 1898. Austrian commemorative service medal commemorating the 50th anniversary of Franz Joseph's reign in 1898. (swap: 40$, sale: 25$):


12) A 1993. gold plated Hungarian commemorative token celebrating the 300th anniversary of Debrecen becoming a free royal town in 1693., it's a large 42mm token designed my Lebo F. and minted by the Hungarian national mint. It shows emperor Leopold I. on one side and the emblem of Debrecen on the other. It isn't in the Numista catalogue yet (swap: 25$, sale: 15$):
