Thermo Serve Thermos

This is a fun vintage thermos mug from Thermo-Serve, Made in the USA. It's plastic, white base, handle and interior. Around the outside is a drawing of a guy in a sailboat, huge waves, and he's bent over the side. The title is Heaving To! The mug is wider at the bottom, approx 4", at the top, 3 1/4". The widest point with the handle is 5". There's a signature on the drawing, but can't make out the name. David? Buyer to pay shipping of $6.50