On the block is the insulator in the middle. --- CD 217 Armstrong. This is not the common as dirt CD 216 that I set out on the free table at shows and 6hrs later IT'S STILL THERE !! The double ribbed unit is much harder to come across and is the only unit available for this CD ! I see no damage at all. Left is the red headed step-child CD 216 Armstrong in rootbeer amber with no damage at all. Right is a CD 167 Armstrong in rootbeer amber with no damage at all. Take all three of these mint rootbeer amber Armstrong pieces for the price of the 217 at $20.00 + shipping. First email that says' "I'll take it.". No PayPal. Email with questions.