![Rolex. A fine, extremely rare and early stainless steel chronograph wristwatch with black "Solo" dial Rolex. A fine, extremely rare and early stainless steel chronograph wristwatch with black "Solo" dial](https://www.christies.com/img/LotImages/2020/GNV/2020_GNV_18827_0190_004(rolex_a_fine_and_extremely_rare_stainless_steel_chronograph_wristwatch072741).jpg?mode=max)
Rolex. A fine, extremely rare and early stainless steel chronograph wristwatch with black "Solo" dial
![Rolex. A fine, extremely rare and early stainless steel chronograph wristwatch with black "Solo" dial Rolex. A fine, extremely rare and early stainless steel chronograph wristwatch with black "Solo" dial](https://www.christies.com/img/LotImages/2020/GNV/2020_GNV_18827_0190_001(rolex_a_fine_and_extremely_rare_stainless_steel_chronograph_wristwatch072726).jpg?mode=max)
Rolex. A fine, extremely rare and early stainless steel chronograph wristwatch with black "Solo" dial
![silas815 on Instagram: “Super rare Rolex black solo 6240 duo 👬 both single "Rolex" text prototype dial, early 1.2M serial, Mk 0 pushers and in stunning condit… silas815 on Instagram: “Super rare Rolex black solo 6240 duo 👬 both single "Rolex" text prototype dial, early 1.2M serial, Mk 0 pushers and in stunning condit…](https://i.pinimg.com/originals/b0/53/e7/b053e7b6a7557789b2e3179aff93828c.jpg)
silas815 on Instagram: “Super rare Rolex black solo 6240 duo 👬 both single "Rolex" text prototype dial, early 1.2M serial, Mk 0 pushers and in stunning condit…
![Vintage Daytona Scandal in Monaco – Vintage Panerai and other iconic timepieces under the loupe at Perezcope Vintage Daytona Scandal in Monaco – Vintage Panerai and other iconic timepieces under the loupe at Perezcope](https://watchengines.files.wordpress.com/2019/07/190714-rolex-daytona-6240-2nd-catalogue-picture-1439087.jpg)
Vintage Daytona Scandal in Monaco – Vintage Panerai and other iconic timepieces under the loupe at Perezcope
![Cool Rolex of the Day #783: 6240 "Solo" Daytona, so called because it has no "Cosmograph" or "Oyster" text on dial, steel, 37.5mm. Circa 1967 : r/ rolex Cool Rolex of the Day #783: 6240 "Solo" Daytona, so called because it has no "Cosmograph" or "Oyster" text on dial, steel, 37.5mm. Circa 1967 : r/ rolex](https://external-preview.redd.it/Tt4H2PfQSSRh-xjCceao_RIB15fbzCruXdHBac0otek.png?width=640&crop=smart&auto=webp&s=907d8970c3868cab31489ae138c67147301bcae1)