Seiko 6106

The Seiko 6106 movement has been introduced in 1969 in several versions (A, B, C). It was an automatic day and date calibre with 23 or 25 jewels. The day disc was printed in two languages on the C version. The C version had a quickset for both day and date.
It was used in many Seiko 5 models from 1969 to ca 1975 : Seiko 5 Actus SS, Seiko 5 Sports, Seiko 5 DX. It fitted the Seiko Advan range too.