Vintage Gruen: 1930's » Quadron Import 220

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Re: Quadron Import 220 [message #12414 is a reply to message #12407]

Fri, 01 May 2020 23:13

JackW
Messages: 1998
Registered: May 2013
Location: Denver

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The 'Staybrite' mark is interesting....
Quote:

Staybrite steel was made by Thomas Firth John Brown Ltd. of Sheffield and was protected by Swiss patent No. 138 647. Use of the name Staybrite like this required permission from Firth, and it could only be put onto items that were actually made of Staybrite steel.

from - https://www.vintagewatchstraps.com/stainlesssteel.php

Different watch and markings, but I've an example that is also marked Staybrite.... I also presume this is pre-Guildite other wise it would be marked in addition.

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

[Updated on: Fri, 01 May 2020 23:16]

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[Message index]

		Quadron Import 220 By: Thojil on Fri, 01 May 2020 14:53
		Re: Quadron Import 220 By: Barney Green on Fri, 01 May 2020 16:36
		Re: Quadron Import 220 By: Thojil on Fri, 01 May 2020 23:11
		Re: Quadron Import 220 By: JackW on Fri, 01 May 2020 23:13
		Re: Quadron Import 220 By: Barney Green on Sat, 02 May 2020 06:00
		Re: Quadron Import 220 By: thesnark17 on Sat, 02 May 2020 15:24
		Re: Quadron Import 220 By: JackW on Sat, 02 May 2020 15:47
		Re: Quadron Import 220 By: thesnark17 on Sat, 02 May 2020 17:33
		Re: Quadron Import 220 By: afire on Mon, 04 May 2020 18:09
		Re: Quadron Import 220 By: JackW on Tue, 05 May 2020 16:37
		Re: Quadron Import 220 By: Thojil on Wed, 06 May 2020 21:03

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