How to get the highest price of sale of some German gold pieces in New York (Manhattan)?

I have 5 pieces. Are each DM 20 Reich, dated 1913, 1913, 1893, 1904 and 1912. What is the approximate value?

I think (the top of my head), which around these parts 1 / 5 ounce of gold. They are, however, something rarer than other European gold coins. I take a distributor larger rooms (RM Smythe is in Manhattan, I think which are very old and prestigious). They give the fair value immediately. Articles like the latter, however, are selling on eBay and may have disappeared. For more details on the coin, I saw the world currencies and their values, and watch parts. Many libraries have this book, and many great shops (do not say that simply use a book in a library …..).

Friends For Sale 10mil(max reward not 20/30m) & some tips.

22ct Gold Sovereign Coin Collection for sale, including Proof Gold Coins $2,846.34