 Call Watkins today for a complimentary roof inspection. 601-966-8233 or nomoreroofleaf.com. Rare coin prices have exploded in the last three years. Hard Asset Management, one of the world's largest precious metals and rare coin dealer firms, makes recommendations on what to buy for collectors who know what they're looking for. We can make strong recommendations in areas that we feel have the strongest potential for long-term growth.