Yosemite National Park porcelain sign features really nice graphic of the Indian on a horse with Half Dome in the background. This sign is made of porcelain and measures 11 3/4 across. Whether you are displaying this sign as part of your collection in your man cave, shop, bar, or garage, or giving it as a gift, you can also browse my other auctions for more vintage gas, oil, aviation, automobile, motorcycle, and hunting signs. Vintage Yosemite National Park porcelain sign. 11 3/4 inches in diameter. Bright colors w/ porcelain on both sides.