This is a vintage navigational map / chart - # 851 and #852. It is a double sided chart. The # 851 is Matecumbe to Grassy Key, Florida. 4th Edition - April 4th, 1970. The # 852, on the back side is Grassy Key to Bahia Honda Key - Same edition and date. Both sides are in very good condition. Shipping is $7.50 if within the USA. Check out my other items. I have quite a few different navigational charts listed. I have quite an eclectic mix of interesting items listed, and am always adding more. Please add me to your favorites list.