#042093, Dietrich Gruen

Beschriftung Zifferblatt / Marking Dial	Dietrich Gruen
Baujahr / Year	1921 (Source: NAWCC Bulletin, 10/1988, A few unusual Gruen watches, Robert Dietrich Gruen)
Uhrwerksnummer / Movement Serial No.	042093
Copyrights Photos	photographs courtesy of astorlive (http://www.ebay.com/sch/astorlive/m.html?, http://www.astorlive.net/)