Model family · Seiko
Superior
2 references2 variants1950–1975
Family timeline
All recorded years
19501980
2 references in production order. Overlapping bars show overlapping recorded dates.
19501958196519731980
Dates are those recorded in the catalog. Faint bars mark approximate dates; a dashed point marks a single known endpoint. Undated references remain visible. Chronological order does not establish a predecessor or successor relationship.