Blancpain Fifty Fathoms Rotomatic rubber-style-straps IWC’s SL catalog from 1976/77

IWC’s SL catalog from 1976/77 reveals that the SL designation originally stood for “Steel Line

with crisp edges and beautiful matte brushed and polished finish in incredible tight condition that fits wrists up to 18

- 36mm stainless steel case

Purchased from the widow of the original owner

- Mk1 Maxi Dial with vivid patina

Blancpain Fifty Fathoms Rotomatic rubber-style-straps IWC’s SL catalog from 1976/77The Blancpain Fifty Fathoms holds a legendary place in dive watch history. Designed in the mid 1950s for French Navy combat swimmers, it became one of the earliest and most iconic dive watches. This particular 34mm example stands out not only for its compact size but for its remarkable conditionso much so that it was exhibited by Blancpain at a Fifty Fathoms event in Paris in 2010. The watch features an unpolished case, a stunning black gloss dial