Here is a nice near mint example of a Seiko 50th anniversary Tuna.
Tuna Specs from Seiko Site:
-50th Anniversary Diver
-Self and automatic winding capabilities
-21,600 vibrations per hour
-Power reserve: approximately 41 hours
-One way rotating elapsed timing bezel
-LumiBrite hands and markers
-Screwdown crown and caseback
-200M water resistant
-Stainless Steel & Ceramic Case
Complete with box and papers. Warranty card is not filled in.
A great watch at an attractive price.