- Modified ETA 900 (ETA 930)

- 11.5 ligne

- 18,000 beats per hour

- 17 jewels

- Seen in 1950s Benrus day/date pointer

Ranfft database

-Subseconds

- 10.5 ligne

- 18,000 beats per hour

- 15, 17, and 21 jewel variants

- Found in 1942 Bulova

Ranfft database

- 11.5 ligne

- 18,000 beats per hour

- 17 jewels

- Seen in 1965 Bulova

Ranfft database

- Subseconds

- Previously Unitas 6498

- 16.5 ligne

- 18,000 beats per hour

- 17 jewels

Ranfft database

- Subseconds

- 14/0 size

- 18,000 beats per hour

- 19 jewels

- Found in 1948 Hamilton Norman

Ranfft database

- 18,000 beats per hour

- 17 jewels

- Found in circa 1956 Omega

Ranfft database

- Subseconds

- 18,000 beats per hour

- 17 jewels

- Found in circa 1961 Omega

Ranfft database

- Subseconds

- predecessor of ETA 6498

- 16.5 ligne

- 18,000 beats per hour

- 17 jewels

- Seen here marked "R. Pavot Watch Co."

Ranfft database

- 14 ligne

-18,000 beats per hour

- 17 jewels

- Found in 1970's Aero Watch pocket watch

Ranfft database

- 14 ligne

- 18,000 beats per hour

- 17 jewels

- Found in circa 1970 Wakmann

Ranfft database