Launched in the early 1960s, the Rolex reference 6238 is notable for being the last chronograph manufactured by Rolex that would not be a Daytona, earning it the nickname "Pre-Daytona". Encased in a 36mm diameter case with a smooth bezel, it was the final chronograph reference to feature this design before transitioning to a solid metal bezel with a tachymeter scale, as seen in the reference 6239. While most of the production of the 6238 was made in stainless steel, yellow gold examples are particularly sought after and rare.

This already rare reference becomes even more exceptional with its 14K yellow gold case and bracelet. The use of 14K yellow gold was believed to be reserved for watches intended for the North American market, underscored by the ROW stamp on the movement, indicating import to the United States.

Phillips had the privilege of offering a similar example just two case numbers away in our TOKI auction in November 2024 (1’697’078), also made in 14K yellow gold for the U.S. market, likely from the same batch shipped in 1967. However, while that watch featured a U.S. made bracelet, the present timepiece is equipped with a Swiss made 14K yellow gold bracelet, as confirmed by the squirrel hallmark on the folding clasp.

The condition of this piece is magnificent and exceptionally well-preserved, displaying a layer of attractive patina on the caseband, caseback and bracelet, a testament to its minimal wear. This watch has resided in the Watch Museum VOGA collection in Japan, founded by Toshio Masui, a distinguished watch collector who has amassed a personal collection of over 800 cherished timepieces. Since its inclusion in his collection, the watch has developed a deeper patina compared to the images in his Antique Collection book.