Jeton
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Jetons or jettons are tokens or coin-like medals produced across Europe from the 13th through the 18th centuries. They were produced as counters for use in calculation on a counting board, a lined boa
Gold jeton, Popel of Lobkowicz by Engelhart, Prague 1592, Ø 24 millimetres (0.94 in)
Nuremberg, c. 1553, moneychanger, Ø 28 mm.
Dordrecht 1588, invincible Armada destroyed, Ø 30 mm.
Christoph of Lobkowicz counter produced by D. Engelhart in 1592.
Counting board
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The counting board is the precursor of the abacus, and the earliest known form of a counting device. Counting boards were made of stone or wood, and the counting was done on the board with beads, pebb
Jeton
…tokens or coin-like medals produced across Europe from the 13th through the 18th centuries. They were produced as counters for use in calculation on a counting board, a lined board similar to an abacus. Jetons for calculation were commonly used in Europe from about 1200 to 1700, and remained in occasional use into…
This simple counting board consists of a wooden board with lines drawn on it, with pebbles (Latin: calculi) used as counters. Lines represent powers of ten and spaces between the lines represent 5 times the adjacent power of ten. The pictured number is 2,648, or in Roman numerals, MMDCXXXXVIII. The exact form and use of common ancient counting boards is not known, as few ancient counting boards and no ancient written instructions have survived.