You've got some good coins in there:
The 2 half dollars are 90% silver, worth about $8 each in silver scrap.
Your 1 mark coin (dated 1899 it looks like) is 90% silver, some 1 mark coins have rare mints although I don't have a reference right on hand, your mintmark will be on the obverse under the eagle and it will be a small letter.
Your 2 half crown coins are 50% silver and worth a few bucks. They're not rare dates and just worth scrap.
Your 1943 sixpence is 50% silver also, and is also a common date worth silver scrap.
Your 1956 5 mark coin is also silver, I believe it is more or less a common date but might be worth more than silver scrap, I think they have an ASW of 0.225 tOz.
Your smaller coin with a shield on it on the picture with the half dollars and half crowns I believe is (debased) silver from a Northern European country, I know I've got one and its silver, but can't for the life of me remember the country. Naturally the date will determine more of the value, but I do believe it is silver.
Your 1961 25 Ore (from Sweden) I believe is 40% silver and I think its a fairly common date.
Your 1899 3 Kopek might be worth a buck or two as a curiosity, although you might want to do further research since there are some rarities in the Russian Empire coinage.
Under your half dollars is a copper coin which I believe dates from the 1700s but is quite worn, see if you can get a date (and mintmark if applicable)
Post your dates for your British bronze coins (any coin that says Penny, Half-Penny or Farthing on it) because there are some rare dates and rare varieties that can be worth quite a bit, although normally the values are quite modest for Post-Edward VII bronzes.
Post the dates and mintmarks for your German coins, Germany used quite a few different mints and a coin for a year that is incredibly common for one year might be incredibly scarce for another.
Also, check if your 1979 Susan B. Anthony dollar (assuming it is 1979-P, couldn't make out the mintmark) for the wide-rim variety (
1979 Wide Rim Susan B. Anthony Dollar | eBay ) if its not the wide-rim it is just worth $1.
