What few people are aware of is that it’s not just the name of the company such as moorcroft, rookwood, worcester or doulton that may be there, but also a number of other things used by the manufacturer, designer or artists and placed in or around the mark itself. The company name itself only gives the appraiser a rough timeline of when the company was known to operate.
Other factors such as the colour of the mark, how it’s applied or the numbered codes within the design can often date a piece to the exact year it was produced and tell you where or who the specific artist was.
The Doulton marks are many and varied but most follow the same theme.
Dating Royal Doulton products from their Doulton marks means you sometimes have to check very carefully.
The diamond mark, found on the item itself, can help you to work out when it may have been manufactured and what material class it belongs to.Use this guide to find original representations (drawings, paintings, photographs) of trade marks.The National Archives collection is far from complete, but this guide will suggest supplementary sources for researching trade marks.This information can help you in searching for a design registration, but you should note that not all searches will be successful.See our research guide on registered designs for more information.The right hand image demonstrates a design registration mark for 22nd October 1875 (B for October and S for 1875).Table: KM1.i Registration Marks 1842 to 1883 For the purposes of dating antiques, the bundle code does not matter.Diamond marks were issued by the Patent Office between 18.They were issued with the registration number when a design was registered.Famous companies such as Wedgwood, Meissen, Doulton, Minton, Derby and Worcester all use a variety of numerical or symbolic china marks that can, with just a little knowledge and analysis, give you the exact date of production.However, few collectors, buyers or sellers have the ability to memorise all china marka, signatures or number codes used on antiques.