{"product_id":"rare-jeu-publicitaire-du-sphinx-au-bon-marche-circa-1910","title":"Sphinx Game - Rare advertising game from Le Bon Marché, circa 1910","description":"\u003cp data-start=\"86\" data-end=\"339\"\u003e A curious logic game entitled \u003cstrong data-start=\"118\" data-end=\"139\"\u003e\"The Sphinx Game,\"\u003c\/strong\u003e published as \u003cstrong data-start=\"153\" data-end=\"233\"\u003ean advertising game for the Au Bon Marché department store (Maison A. Boucicaut), Paris\u003c\/strong\u003e . This parlor game is based on a mathematical principle that allows players to guess a number they have thought of.\u003c\/p\u003e\n\n \u003cp data-start=\"341\" data-end=\"721\"\u003eThe set consists of \u003cstrong data-start=\"366\" data-end=\"410\"\u003e8 cardboard cards with cut-out windows\u003c\/strong\u003e , numbered from I to VIII. Each card displays a series of numbers visible through openings. The player thinks of a number between \u003cstrong data-start=\"543\" data-end=\"555\"\u003e1 and 100\u003c\/strong\u003e and then indicates, for each card, whether their number appears in the list. The corresponding cards then allow them to \u003cstrong data-start=\"676\" data-end=\"720\"\u003ereconstruct the chosen number exactly\u003c\/strong\u003e .\u003c\/p\u003e\n\n\u003cp data-start=\"723\" data-end=\"1044\"\u003e The process relies on a mathematical system similar to \u003cstrong data-start=\"779\" data-end=\"797\"\u003ebinary coding\u003c\/strong\u003e , very popular in mental arithmetic games and scientific entertainment of the early 20th century. The game gave the illusion of \u003cstrong data-start=\"938\" data-end=\"959\"\u003emind reading\u003c\/strong\u003e , making it an amusing form of entertainment in living rooms and family gatherings.\u003c\/p\u003e\n\n\u003cp data-start=\"1233\" data-end=\"1520\"\u003e ✦ Publisher: Au Bon Marché - Maison A. Boucicaut, Paris \u003cbr data-start=\"1287\" data-end=\"1290\"\u003e✦ Period: circa 1910\u003cbr data-start=\"1310\" data-end=\"1313\"\u003e ✦ Dimensions: approx. 15 × 11cm\u003cbr data-start=\"1338\" data-end=\"1341\"\u003e ✦ Contents: 8 numbered cardboard cards I to VIII\u003cbr data-start=\"1392\" data-end=\"1395\"\u003e ✦ Condition: complete – good overall condition – small tear at the edge of one card – paper slightly yellowed with signs of wear\u003c\/p\u003e\n\n\u003cp data-start=\"1522\" data-end=\"1704\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e An uncommon vintage advertising game, interesting for collectors of \u003cstrong data-start=\"1609\" data-end=\"1703\"\u003emathematical games, patience games and advertising items from Parisian department stores\u003c\/strong\u003e .\u003c\/p\u003e","brand":"Brocante Jolbro","offers":[{"title":"Default Title","offer_id":53534784422221,"sku":null,"price":65.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1049\/5053\/files\/20260313_163253.jpg?v=1773482178","url":"https:\/\/brocantejolbro.com\/en\/products\/rare-jeu-publicitaire-du-sphinx-au-bon-marche-circa-1910","provider":"Brocante Jolbro","version":"1.0","type":"link"}