Hi I'm Chris from the Philippines. It's been less than a year since I've started collecting coins - mostly Philippine silver coins from 1903. Recently I acquired, through hunting, hundreds of territorial coins that are fantastically "rainbow" toned. Though I have the slightest idea if they are naturally toned or whatever, I bought the bunch because I have never seen anything like them (aside from photos of rainbowtoned silver dollars on the internet), and the seller needed money badly.
Would just like to ask for some opinions regarding this. I brought the coins to a local coin dealer but he too has no idea about the toning. They are GENUINE territorial silver coins, though, no doubt about that.
Please post your opinions. I don't know what questions to ask.
here are two coins. I even named one "Blazing maiden" because of the toning. The files are big so you can zoom in so please be patient.

Thanks guys.
1903 Philippine territorial 1 peso silver coin
http://www.badongo.com/pic/2337957 http://www.badongo.com/pic/2337998
1907 Philippine territorial 1 peso silver coin
http://www.badongo.com/pic/2338007 http://www.badongo.com/pic/2338020