Vintage Gruen: The caliber database » Caliber 740 (Premo, WSC, Guild)

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Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants [message #12127 is a reply to message #12126]

Sat, 08 February 2020 11:14

Case
Messages: 1178
Registered: May 2019
Location: Cincinnati

Gruen Authority

Wow, the design protection expiring in 1922 makes an even better backstop for dating these. I’ll keep looking for a dial side pic of a WSC version, to see if Depose is still stamped. I’d assume the US patent would have lapsed in 1916 and disappeared from the WSC ones.

For my education, what does the “8 h. p.” on the design protection mean?

I’d assumed the 740 was phased out by 1923, after the other 754-758 became the workhorses, but that’s just from my own limited data set: never seen one with a sn on the bridge or one cased after perhaps early 1923. However, I do note 758s in cases stamped “740” from the 1923 & possibly 1924 range. So may have lingered, as you say. Would love to see some later case examples.

Btw, I assume the same maker (Lavina) would have also supplied the 750, 752 (17L) and 720, 721 (19L). Same bridge design, same front plate number series (it is the maker’s, not Gruen’s), same US patent stamp, at least on the Premo 721 and 750 examples I’ve captured front plate pics of.

My two caveats:
1) I'm wrong many times a day --just ask my wife!
2) Always seeking to learn more

[Updated on: Sat, 08 February 2020 11:16]

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[Message index]

		Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Case on Fri, 07 February 2020 05:20
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Case on Fri, 07 February 2020 05:44
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Barney Green on Fri, 07 February 2020 16:49
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Case on Fri, 07 February 2020 21:46
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Barney Green on Fri, 07 February 2020 22:51
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Case on Sat, 08 February 2020 11:14
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Barney Green on Sat, 08 February 2020 15:05
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: thesnark17 on Sat, 08 February 2020 17:29
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Barney Green on Sat, 08 February 2020 17:48
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: Case on Sun, 09 February 2020 05:05
		Re: Caliber 740 (Premo, WSC, Guild) - 17J & 19J variants By: thesnark17 on Sun, 09 February 2020 15:18

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