Vintage Gruen: 1910's and prior » Dietrich Gruen Pentagon

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Dietrich Gruen Pentagon [message #19615]

Thu, 24 July 2025 18:56

Gary
Messages: 2349
Registered: May 2013
Location: Seattle

Gruen Authority
Cheerleader

Model name: Dietrich Gruen
Type: Pentagon
Period/date: 1911-1920
Gender: Gents

Case Maker: Gruen Watch Company
Case Material: 14K Yellow Gold
Case Serial: 7405
Case Style no: N/A

Caliber: Unknown
Movement Maker: Patek Philippe, Lecoutre and Gruen?
Movement Serial: 150120
Bracelet: N/A

Other info: Adjusted in all positions and temperatures. 19 Rubles. Chronometer Balance and Isochronism. Stamped u.t.

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[Updated on: Thu, 24 July 2025 21:07]

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Re: Dietrich Gruen Pentagon [message #19618 is a reply to message #19615]

Fri, 25 July 2025 03:34

JackW
Messages: 2078
Registered: May 2013
Location: Denver

Gruen Authority
Head Janitor
Site Admin

Holy cats Gary, that is a beauty!

All I know is based on hard work & writing by others. I can only aspire to augment this body of knowledge. If I am wrong it is because of my own failings. -me

"If I have seen farther it is by standing on the shoulders of giants." - Newton

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