It is a good move not to take the word of someone trying to buy your coins, but to find opinions from folks who have nothing to gain or lose by telling you what they think you have and what it may be worth. That is a big value of this site. You cannot sell here until you have 250 posts, giving plenty of time for you to become your own coin expert with the concurrence of the crowd of folks here who have seen it all, numismatically speaking. Good luck!