Wow - that really is a lot of coins. Next time, could you please post separate threads about each coin? It makes it easier to know which coins are being talked about. And try to reduce the picture size, too; downloading 40 1.6 megabyte pictures will kill some people's download quotas.
But, we'll see what we can do. Prices quoted are in US dollars, because that's what the currency used by the Krause world coin catalogues.
#1: (Pictures 0848, 0849): France 5 centimes, L'an 5. As you're no doubt aware, L'an 5 equates to AD 1796-1797, and was the first year that decimal (centime) coins were struck by France. Over a dozen mints struck 5 centime coins; each one had it's own mintmark. This coin was mintmark "R", struck at the Orleans mint. In this condition, only worth $5 or so.
#2: (Pictures 0819, 0820): France 50 francs 1976. Bullion value; .8682 ounces, US$14.75 at current prices.
#3: (Pictures 0811, 0814): France 10 francs 1967. This one seems to be scuffed or scratched on one side, so it's probably only worth bullion value. a 10 franc coin contains .7234 ounces of silver, worth US$12.30 at current prices.
#4: (Pictures 0821, 0823): France 5 francs 1873, mintmark A (Paris). Again, the harsh cleaning it's had will reduce the value to a few dollars above bullion value; this coin contains the same amount of silver as #3; probably $15 to $20 at most.
#5: (Pictures 0816, 0818): Prussia 2 thalers 1851. It's been cleaned, but even so it's probably worth $100 or so.
#6: (Pictures 0831, 0832): France 50 francs 1853, mintmark A. It contains .4667 ounces of gold, worth US$510 at current prices; it may be worth up to $550 or $600.
#7: (Pictures 0826, 0827): This coin is interesting. It was originally a silver ecu of king Louis XVI, 1779, but it has been counterstamped for use by the government of the Swiss canton of Bern for use as a 40 batzen coin; the counterstamp was applied in 1816. The counterstamp looks to be in excellent condition; the coin was probably already quite worn when it was marked. Listed in the Krause world coin catalogue under Swiss Cantons - Bern - Counterstamped coinage, KM# 181, probably worth a couple of hundred dollars.
#8: (Pictures 0840, 0843): French Indochina 1 cent 1889, the pic's been doubled so it's tricky to grade, but probably worth $5 to $10.
#9: (Pictures 0834, 0837): Francs 40 francs 1834 A, BV $407, probably worth about $450.
#10: (Pictures 0865, 0866): France 1 franc 1866 A, very worn, probably not worth much above bullion value (BV = $2.30).
#11: (Pictures 0875, 0877): Spain 5 centimos 1870. Probably worth a couple of dollars in this condition.
#12: (Pictures 0881, 0886): Bulgaria 10 stotinki 1881. In this condition, with the green corrosion happening to it, less than a dollar.
#13: (Pictures 0857, 0859): France 10 francs 1914. These coins have commonly been restruck by the Paris mint, so there's no way to tell whether it was actually struck in 1914 or not. BV for .1867 ounces of gold is $204.
#14: (Pictures 0878, 0879): France 20 francs 1907. Also may have been restruck; bullion value: $408.
#15: (Pictures 0888, 0889): France 10 francs 1860. In this condition, bullion value: $204.
#16: (Pictures 0863, 0864): France 1 franc, L'an 12, Napoleon as Consul, mintmark D (Lyon mint). A scarcer mintmark, probably worth $100 or so.
#17: (Pictures 0860, 0861): This coin is from the Italian state of Sardinia-Piedmont, ruled by the House of Savoy. It's dated 1796 (at the bottom of the portrait). My 1700's catalogue doesn't have pictures of all the Sardinian denominations, but I think this is a 10 soldi. Whatever the denomination is, in this condition, it'ss only be worth a few dollars.
#18: (Pictures 0854, 0855): France 5 centimes, L'an 8/7 (this is an "overdate", where dies made for L'an 7 were re-carved for use in L'an 8), BB mintmark (= Strasbourg mint). In this condition, probably $3 or $4.
#19: (Pictures 0828, 0829): See my comments on coin #7: this too was a French ecu, counterstamped for use in Bern. KM# 182, even scarcer than coin #7 - perhaps worth as much as $500.
#20: (Pictures 0875, 0877): France 20 francs 1907. Also may have been restruck; bullion value: $408.
The last coin on your picture site, pics 0890/0891, appears to be an old French coin, Louis XVI. Probably either a half-sol (24mm across) or sol (29mm across).
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