Seriously you shouldn't feel really bad. Although it would be nice if you could get a hold of those old coins, I even had troubles when I was in Russia. When I looked at some old and pretty scarce Imperial Russian rubles (which I thought to be pretty "normal"), not only were the originals really expensive, but when I thought the prices are too cheap in a tourist area, that's when it struck me that they were counterfeits. Why not take a look at eBay now at various Egyptian coins?

Even in Russia where it is thought to be a place not friendly to tourists, you can even find counterfeits. It is only when you go to very odd places like Yaroslav, (extremely pricey though) where you might be able to find some genuine pieces but likewise, if you don't know what they are, don't even bother looking at them.
*cough* - You are not supposed to export out any Russian currencies out of Russia either, but I do confess that I did "export" some out