Today we have for sale a wonderful truly old piece it is dated 1931 and it i s c alled Disk o Knowledge Speed History You spin the wheel and it shows a drawing of the president in one window and the other small windows all list fact that include Education Civil occupation, Vice President, Date of Birth birthplace, Political party, Outstanding events, Date of death place of burial. The back side is full of weights measurement and has another chart on adding subtracting and multiplies. The wheel is paper and has bumped edges to the little points all around the edge, it measures 9.5 inches I think the condition is amazing considering the age and how much this must have been used.Please check out my other auctions for more great vintage items. Always happy to combine shipping if possible. Please feel free to email if you have further questions or need more pics. High bidder pays actual shipping. Insurance is recommended, but is optional. PAYPAL Ships asap, usually within 48 hours (unless its a weekend). Checks held 10 business days to clear. Paymt. due within 7 days of auctions end.