Vintage cast iron 19" round Bright Yellow Porcelain self rimming drop in bathroom sink. We do not know the actual Kohler color name, it is not a color we see very often. It is marked Kohler c.1970s. The porcelain shows normal wear, there are scratches & scuffs, a few pockmarks, and a manufacturing flaw in the porcelain on the back wall in the basin and around the center faucet mounting hole as shown in the pics. Overall good salvaged condition. Please be sure to look over all of the pictures as they are the best description. Feel free to ask questions when needed. Thanks for looking! 

Measures approx.-  

Overall - 19"diameter

Faucet valve handles - 1 1/4"diameter and are 8"apart center to center, the center hole is 1 1/8"diameter

The basin is 13 1/2"wide x 12"depth x 6 1/2"deep (5"fill height)

Drain opening - 1 5/8"diameter