1967 - 1968 MST 477 Roamer Mustang

The Mustang 301 shown here is an early version with the MST 477 (ETA) is quite rare. I have been sitting on a reasonable case and excellent dial for around 18 months waiting for a donor with hands and movement to turn up. The better case came with a rather scratched up (see photo) but original signed crystal - that needed a considerable effort to save, as the crystals are no longer available for this case. The donor was a terrible mess, including the dial glued down as shown in the photo.
 
Mustangs were produced between 1967 and 1975 with at least five different movements and 3 different case styles.
 
This style of Mustang (the 301 case) features a front loading (access through the crystal) waterproof case and hidden crown at 3 o'clock. The Mustang started in 1967 with two case styles (the 301 here and the 601 case) and two movements, the date only models with the 44 jewel MST 471 and the day-date (D+D) using the MST 477 (modified and Roamer finished ETA 2538). From 1969 the 28 jewel version of the MST 471 was fitted to the date only version, along with the MST 478 (modified and Roamer finished ETA 2638) fitted to the D+D models, in addition the 303 case was advertised (like this 301, but with hidden lugs). The 303 case was advertised in 1966 as part of the new Stingray range, it appears then to have become in 1967 part of the Mustang range. The 301 and 303 cases were only available in stainless steel cases, and in 1970 the 301 case was dropped and only the 601 and 303 cases were listed. Between 1971 and 1973 there was an electronic version fitted only to the 601 case with the MST916 (ESA 9154) that does not appear in the catalogs. In the 1974-75 catalog the 601 Mustang is shown as a date only stainless steel version with the new MST522 automatic calibre, in addition this case style is now also shown as part of the anfibio range, but only in gold plate (on brown leather). The 303 case is no longer advertised, and in the 1976-77 catalog the 601 Mustang is gone, but the case style remained as part of the anfibio range, fitted with the MST 522 movement.