Check the listing for details. Rare Mechanical Calculator VAUCANSON – Model AVA13T – Exceptional Condition. Condition: Used, Made in France. Listed at 283.78 USD. Authentic mechanical calculating machine from the famous French brand Ateliers Vaucanson (Paris). A true masterpiece of precision mechanics, this AVA 13 T model (Series no. 29893) is a rare collector's item in this state of conservation. • Aesthetic condition: Superb. The original hammered olive green paint is beautifully preserved, the chrome is shiny and the markings are perfectly legible. • Operation: The machine is fully functional. All cranks, sliders and resets turn smoothly and precisely. • Manufacturing: “Ateliers Vaucanson – Construction of precision devices”, 11 Rue du Surmelin, Paris XX. • Details: Equipped with its original rubber feet for perfect stability. Whether for a demanding collector (antique calculators, scientific objects) or for a high-end vintage/industrial office d.