EBay Item #380164784

"French Troncet Totalisateur Book Calculator. An interesting early French calculator in the form of book. Folding book covers with name on front cover, open it up and there are instructions on inside cover in french with brass plated metal calculator and operating pen. 7 ½” x 5” W."

Seller: steamnut@lincoln.midcoast.com - Sold for $576.67 - Jul 21, 2000