This is a vintage NAVIGATIONAL CHART / MAP # 11428 -  ST. LUCIE INLET TO FORT MYERS & LAKE OKEECHOBE - FL - Okeechobee Waterway.  This chart is folded to a size of 5" by 10".   The chart itself is appx. 58 " by 20" if  laid out flat.  - Edition 23 - Feb 8, 1986  The chart is in good condition.  Shipping is $7.50 if within the USA.  You may wish to visit my wife's Ebay site at:   vmelix      She has quite a few interesting items listed, including quite a few of these navigational charts.  Please add me to your favorites list.