I'm afraid that you will find that they won't accept them. I spent 4 months earlier this year to get EMXC shares deposited. I don't think it was an EMXC issue. It was a brokerage issue. There is a significant cost to companies like TDA when people deposit certs and then sell them quickly, which is generally the case. IR firms, consultants, investors, etc often deposit certs and then quickly sell the stock for whatever they can get. This costs the brokerage so they have just changed their policies to accomodate the protection of their fees.