I wouldn't spend the money to get Rose and Feller authenticated.
It wouldn't be smart and will sell below the fee.
A feller signed card will get you $3-$10 per. There are millions of his out there.
Rose will get you $10-$25 depending on what card is signed.
Send me a list of what you have, as I collect autographs and can help you out.
csmtampa@gmail.com