Vintage 1980s Otagiri Japan Spill-Safe Travel Coffee Mug Sailboat Art

So apparently in the 80s, people travel with this kind of coffee mug There is a felt coating on the underside of the mug that is meant as a table protector. Cute to add a nautical touch to your décor and these mugs are still very useful to use on boats. MEASUREMENTS H: 4 In D: 2.5 In (top opening) W: 4.25 In (bottom) Holds 16 fl oz. CONDITION: Pristine. No damage / crack / chip. The felt at the bottom is in good condition. See Photos