Model family · Seiko
GS
6 references6 variants1960–1972
Family timeline
All recorded years
19601980
6 references in production order. Overlapping bars show overlapping recorded dates.
19601965197019751980
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.