Question: What Does Extra Plate Is On The Back Of Silver Mean
By: Jocelyn
Published: May 23, 2010

I just purchased a set of tableware. It is a wm rogers mfg.co on the back and it also has extra plate IS

Answers:
Chris Paulk

This is from CentenialAntiques.com
Usually when silver contains extra markings, it is because there was a merge or change within the company. Not sure if this is what you're looking for, but it appears that there was a merge or alliance with the International Silver Company -IS.
"Wm. Rogers (William Rogers), 1801 - 1973, was a master American silversmith and a pioneer in the silverplate industry. It can be confusing to identify silver marked Wm. Rogers because his prestigious name was appropriated by many companies both in his lifetime and for generations after.
At least six interrelated lines of silverplate have been marked Wm. Rogers.
1. The mark 1865 Wm. Rogers was used by Rogers himself in 1865.
2. The mark Wm. Rogers surrounded by a star and eagle was used by William Rogers between 1825 to 1841 on his coin silver spoons. From 1878 to 1893, after the death of William Sr., it was used by Simpson, Hall, Miller and Company after they signed an agreement with Wm. Rogers Jr. This mark was used again off and on from the late 1800s until at least 1939 by the International Silver Co.
3. The mark Wm. Rogers Mfg Co was used after 1865 by William and his son William Jr. and later by the International Silver Company.
4. The mark Wm. Rogers and Son followed by a star was used from around 1856-1861.
5. The mark Wm. Rogers and Son was used by William Sr. and Jr. from 1861 to 1871 and later by the International Silver Company.
6. The mark Wm. A. Rogers was used as early as 1897. It became part of Oneida silver around 1929, and Oneida employed the Wm. A. Rogers mark as late as 1978.
Popular Victorian patterns from Wm. Rogers and Son include Alhambra (1907), Beauty (1909), Orange Blossom (1910), and Rose (1909).
Popular patterns from Wm. Rogers Mfg include Isabella (1913), Revelation (1938), and Jubilee (1953).
Popular patterns from Wm. A. Rogers include Glenrose (1908), Grenoble (1906), Carnation (1908) and La Concorde (1910).
Good references to consult regarding Wm. Rogers include the Encyclopedia of American Silver Manufacturers by Dorothy T. Rainwater and Judy Redfield, Silverplated Flatware by Tere Hagan, American Silverplate by Dorothy Rainwater with Donna Felger, and the Standard Encyclopedia of American Silverplate by Frances M. Bones and Lee Roy Fisher."
fernando

Tengo una bandeja con las iniciales l.b.s.co con unos simbolos de cruz, corona, campana sheffield mi correo es fdomove8@hotmail.com si alguien me puede decir de que año son,
 le enviaria fotos, gracias
Marilynn Turner

i have a soup spoon by Wm. Rogers MFC. CO. Extra Plate original/rogers.  I would like to know what extra plate means as opposed to .99 sterling or some other percentage.  Thank you for your fast response.
amberwaves

It means that there is a little more silver in it than just your normal silver plate. In a spoon, it would be the curved part inside, places that get more warn over time.
Kathy Diemert

Im trying to find out what pattern of flatware I have and if it pure silver. What it's worth if anything.  It says on the back wm rogers mfg co extra plate, original rogers