Chronograph

Family timeline

7 references in production order. Overlapping bars show overlapping recorded dates.

• 2508c. 1930–c. 1946
• 3055c. 1930–c. 1940
• 3359c. 1930–c. 1945
• 3834c. 1940–c. 1945
• 2705UndatedUndated — position unknown
• 2917UndatedUndated — position unknown
• 2920UndatedUndated — position unknown

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.