the holy grail of numismatics - the 1910s ten centavo coin costs at least 4M Php ($100k). but sad to say, according to experts, the chances of finding one is as slim as finding a pot of gold at the end of a rainbow. if ever you get to find one, there's a 99.99% chance that it's a counterfeit. oh well.
http://blog.filipinonumismatist.com/2010/06/1910-s-ten-centavos-facts-and-fictions.html