The present watch is a very well preserved example with original dial and 1950s Rolex bracelet. It is exceptionally rare to find the original certificate of origin with any Rolex chronograph wristwatch. Ref. 3481 was produced in stainless steel only with a choice of steel yellow or pink gold bezel. Similar watches are published in “Rolex: Collecting Modern and Vintage Wristwatches” by Osvaldo Patrizzi Guido Mondani Editore Genova 2004 vol. 1 p. 111.