www.925-1000.com

There are so many "900" Unknown Maker threads we might make a science out of studying the stamp styles...however, you might find the ideas on the origins of this one interesting: https://www.925-1000.com/forum/viewtopic.php?f=12&t=48322&p=145583&hilit=900+stamped#p145583 Search...

Additional information picks up in this thread for Haynes & Lawton: viewtopic.php?f=18&t=55438

Haynes & Lawton advertisement in The California Farmer (1869) indicating that all their silverplated wares are plated at The Pacific Plate Works (on H&L's property) and stamped with that name. Perhaps they cease using their own mark? Link to UCR newspaper archive: https://cdnc.ucr.edu/?a=d&a...

Additionally, advertising (1869) in a Sacramento paper, H&L declared themselves not only as agents for PPW platewares but also for Earthenwares of John Maddock & Sons' (note early use of plural) of England. Maddock was well known internationally around the globe not only for household china,...

Advertising in a Stockton newspaper shows Haynes & Lawton's operating a location at 183 Main Street, Stockton and noting silverware just in from Pacific Plate Works (accessed online through U.C. Riverside files, dating to 1869). A sample of an H&L marked ware posted at Silver Salon Forums: h...

Haynes & Lawton ad. in here (courtesy Trev.) where we were tracking Pacific Plate works (scroll down): viewtopic.php?f=61&t=45729&p=133934&hil ... on#p133934

One reference to line name (not specific to this word mark yet): https://www.925-1000.com/silverplate_V.html

That division would be Sheridan Taunton Silversmiths Ltd. (listed in Silverplate Marks "S").

As in you dug out a chunk of metal from well below the surface? Might want to read all the threads on just how lousy surface chemical testing is.

One sample of Lisbon assay mark of older [Crowned "L" having no pellets, within oval cartouch] : https://www.925-1000.com/forum/viewtopic.php?f=8&t=44153&p=127012&hilit=crowned+L+lisbon#p127012 Note we have no Tremolierstich (zig zag) noted for this one. Can it be found? Have a...

It might be stretching the possibilities of identification, but no two German makers seem to have the exact same details in their crown stamps. There is no makers mark, but hopefully the design style (Deco rings in the fashion of the Michelin tire man, or what was called "Lido" in one Amer...

Pewter?

Sorry for jiggy jagging the camera (that slang dictionary needs to stop stealing my phrases). Three part old Alvin trademark before "Sterling Handle". But "Stainless" marked eye-pokers. Design of separate continuous panels each containing a single scrolled acanthus leaf. Not sure...

On what?

French plater's marks are generally squared...so you seem to have one stamp over another. Stars look to be present as remnants...stars are found in some marks like old A. Boulenger, but that's not conclusive as the shape is different. O.C. also had stars, so there may be others. Can you date the lif...

And more info.: viewtopic.php?f=35&t=22488&p=53504&hili ... ate#p53504

Maker is in this thread: viewtopic.php?f=26&t=19186

For number marks on silverplate (60 here), see : https://www.925-1000.com/a_platenumbers.html
NM should be "Norsk Monster", basically meaning patented design.

Methinks you meant "ILP", not "IPF"...so mark sample is here: viewtopic.php?f=38&t=15471&p=157297&hilit=ILP#p157297

In Hanau under ["Pyr" and "Basket"] might be the origin of one mark. Then in here we find a sample set of "13" coupled with what might be "Pyr": https://www.925-1000.com/forum/viewtopic.php?f=22&t=52292&p=163726&hilit=13+lot+hanau#p163726 I know yo...

Item record: Matched pair, no personalisations. Tipt end topside. Overall length 8". Bowl length 2 3/4". Bowl Width 1 3/4" extreme. Thickness 1/8" mid-handle, narrowing outward to 1/16" and less. I generally agree on the expectations of an "S" form, but have seen i...