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TECHNICAL AND PRACTICAL COMMUNICATION FOR THE GUIDANCE OF WATCH REPAIRERS Chronograph 72 is the same as caliber 23 (see Technical Communi-. Technical Manuals / Valjoux. 611_Valjoux 23, 72.pdf · Valjoux 22.pdf · Valjoux 23,72,72c,88,90.pdf · Valjoux 234,236,726.pdf · Valjoux 24.pdf WITTNAUER • Valjoux 72 chronograph, manual wind, 36mm, stainless steel. $1,700 Watch courtesy of Derek Dier, WatchesToBuy.com WITTNAUER • Lady's,14K yellow gold $250 Watch courtesy of Charlie Cleves - Cleves and Lonnemann Jewelers Wittnauer Wittnauer • Valjoux 72 chronograph, manual wind, 36mm,