The Chesapeake Bay Knife Club is from Parkville, Maryland.    I have only found three Case variations for this club, and tw0 variations are almost identical.  The first two knives  have 1981 tang stamp dates and the last one found is from 1999.  The 1981 dates are both Mako P158’s.  The only difference is in the blade work on the back.  See if you can spot the difference in them below.    Most of the knives from this club were from other makers.  Check the actual selling prices inside.