I think I might have a match for the first one, although yours looks like it is in very good condition for a coin that is purporting to be 177 years old!
Krause says: Turkey KM#645 Mahmud II Cedid Mahmudiye, Gold, 1.58-1.60g, 18.5mm
The arabic numerals along the bottom of the reverse (your top pic) confirm the ascension year of AH1223 (1808) and the regnal year at the top suggests 28 (1834) although the 2 appears poorly struck and looks more like a 6 (but there is no regnal year 68).
I don't want to rain on your parade but you might be looking at a copy. Can you confirm weight, diameter and metal?
Just because you can't see it ... doesn't mean it isn't there - Anon.
You will need an accurate (0.01g) set of scales to measure the coins density - go to Numisdoc then click "Tips and tools" then go to "Measure a coins density"
Just because you can't see it ... doesn't mean it isn't there - Anon.
The 4th and 5th coins appear to be some form of Romanian notgeld. I know that Schitu Golesti is a town in Romania. Possibly are they coins issued immediately following the disaster that was the Romanian (attempted) involvement in the first world war?
From the style, I would say a republican coinage. A name on the obverse would be handy. Try http://www.wildwinds.com/coins/rsc/i.html though with only a C it will be difficult to classify.
Here's a cropped photo of the roman coin.
