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

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Re: Dietrich Gruen Pentagon [message #20515 is a reply to message #19634]

Mon, 27 July 2026 18:57

GruenWatcher
Messages: 9
Registered: July 2026

Gruen Apprentice

Super Nice Watch!

I did notice something off on the timeline.

The time frame says 1911-1920, but the case has a patent shape applied for (May 25, 1921) but it doesn't have the 3-7-22 patent granted date for the Pentagon shape. So, doesn't the time frame have to be at least 1921 and before 1922?

Can someone with more knowledge chime in here?

Is this the only example of these early Pentagons or are there other pictures of these? Can you post?

Also, why doesn't this watch have a VeriThin Movement? Ideas??

Looks like this was cased in Switzerland and not CINCINNATI

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[Message index]

		Dietrich Gruen Pentagon By: Gary on Thu, 24 July 2025 18:56
		Re: Dietrich Gruen Pentagon By: JackW on Fri, 25 July 2025 03:34
		Re: Dietrich Gruen Pentagon By: Jenneke on Sat, 26 July 2025 18:14
		Re: Dietrich Gruen Pentagon By: GruenWatcher on Mon, 27 July 2026 18:57
		Re: Dietrich Gruen Pentagon By: Jenneke on Tue, 28 July 2026 19:16
		Re: Dietrich Gruen Pentagon By: GruenWatcher on Wed, 29 July 2026 16:42

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