How about an all purple transposition? I have never seen one! Until I built this one. I donated several purple Whitall Tatum No.1's from a stash of 27 that I found thrown under a pole when I was a telephone installer-lineman on the Oregon coast in the 1960's. I have contributed my own insulators to to the museum toward these projects but have never seeked much renumeration. To me it is the thrill of 'labor of love!' that counts. At the Oregon Electric Railway Museum in Brooks, OR. http://www.oregonelectricrailway.org