With Rolex fitted red presentation box
Reference 3834 was launched in the early 1940s, using the famous small size Valjoux calibre 69 chronograph movement. One of the rarest gems in Rolex's celebrated chronograph family, well-preserved and unmolested examples of this niche model are exceedingly rare. As a matter of fact, illustrations of reference 3834 in literature are particularly scarce.
For one example of this model in literature see I Cronografi Rolex - La Leggenda, Pucci Papaleo Editore, pp. 138 & 139.