Super, nice, old couple let me nab these 4 a week before the auction started. They were found in an old wagon behind a barn along with 400-500 other insulators. The insulators had been there for 30-40 years. I am assuming they came off the Rock Island Railroad since that railway ran thru the town the auction was in. From the left (151's): depression green, dark yellow olive green, dark yellow green with olive and milk bands and swirls, bright yellow olive green (133).