Have for sale 3 190/191 transposition items. The one on the left is embossed only A.T&TCo., the Middle has the Am Tel and Tel embossing, with "two piece transpostion " on the rear. the one on the far right is only embossed with the wording "two piece transposition" on the top and bottom sections. On the middle insulator the bottom looks bluer than the top. Maybe a tiny nick here or there but all three are in great shape. 75 dollars for the set and that includes shipping and the pins inside. PayPal friends and family preferred. Please look at both pictures.