More and more coins

When my dad received coins from me last christmas, he have decided to start collecting again. He asked me for the website where I got the rare coin , and he would like to order a few more this week. I am actually thinking of buying a few pieces too. The value of rare coins will appreciate at time goes by, so that would really be a great investment. Do you have any suggestions for great pieces, silver or gold? Or maybe i will just call their toll free number for personal consultation. Hopefully I can get the best deals from them, I have seen at their site that they have free items too, might as well check on that before it runs out of stock.