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Here is a R.KOENIG vintage chronograph from the early 1970’s, having a fantastic VALJOUX 7730 manual winding (just cleaned and overhauled) movement! All functions working like silk and keeping time quite well! The stainless steel case having a screw-back and polished, round pushers is shimmering… 37mm. across. The original dial is quite vibrant, silver with bluish purple register, and red accents… spectacular looking!