First introduced in 1939, the reference 3525 was Rolex’s very first chronograph wristwatch to be housed in an Oyster case defined by water resistant screw down caseback as well as screw down winding crown. The ref. 3525 was offered in yellow gold, pink gold and stainless steel, such as the present execution. Analysis of publicly known pieces shows that - with the exception of a few outliers - most of the production for the reference is grouped in three "batches", with respectively serial numbers around 40'xxx-51'xxx for the first batch, then in the mid 100'000 for the second, and in the mid-300'000 the last.

The present watch is part of an early series where the case number is engraved on the outside caseback. The watch is preserved in impressive condition, particularly when one takes into account its age. The bezel has developed a layer or pleasing patina, giving it an almost copper appearance. The lugs retain good proportions, and the dial has not seen any intervention throughout its lifetime. Most notably, the dial is stamped "Fab. Suisse" and the graphics are in French, which is correct. As an even nicer touch, its accompanied by its original Rolex box, stating the watch was sold at Bandiera & Bedetti in Rome, adding another layer of collectibility.