#1: Islamic; probably early Ottoman. The only bit I can read is "zuriba" (struck), but the accompanying name of the place it was struck in is illegible.
#2: Extra cleaning might
help; I can see text around at least one side, but not enough to read anything clearly. From what I can see of the letters, it looks ancient rather than mediaeval. The big crack probably ruins it as far as value is concerned.
#3: For coins like this where I don'y even know which way is supposed to be "up", I get the pic and try to slowly rotate it on screen until something recognisable appears. In this case, it hasn't helped... unless that large, A-shaped feature really is a letter "A".
#4: I want to say "Kushan", but only because I have a Kushan coin that's all glossy-black patinated like that, not because I can actually recognise anything.
#5: This one is the most identifiable of the lot. The hole is, sadly, not supposed to be there; holed coins are a fairly novel concept in the West, and coins aren't made deliberately like that until modern times. This one is/was Roman: on the obverse, one can read ...STANTI... in the emperor's title, and on the reverse "...ITVS" on the right; most probably a GLORIA EXERCITVS type.
Entering the legible text into the Wildwinds partial inscription search returns coins for Constantine the Great, Constantine II and Constantius II. The diameter is a fairly reliable indicator of date; the smaller the coin ,the later it dates from.
#6: Another Islamic; looks older than #1, based on the text style.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis