Dating diamond registration marks

Published: 21.08.2017

While different research questions will beg varying levels of precision, as long as the reader is informed of the date range, its rationale, and the attendant median value employed, one is probably on safe ground.

The centre is occupied by the abbreviation Rd signifying that this is a Patent Office mark standing for Registered Design.

Skip to Main Content. The fact is the markings that are stamped, painted or impressed on the underside of most antique items can help you tell a great deal about a piece other than just who made it.

1. Why use this guide?

Patented textile pattern by Christopher Dresser. Given that a design could not be registered if it was produced prior to application submission, the date information tells us only that the vessel bearing the mark was manufactured sometime after the date. To view the documents that you find references for, you will need to either visit The National Archives at Kew or pay for copies to be sent to you. Table 1 Type of material or class Iā€”metal.

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In the Figure 1 illustration all that was done to produce the false color image was an adjustment to gamma. The link to the registry design page is:.

Dating English Registry Marks Starting in , England has offered registration of it's decorative designs for pottery, china, wood, paper, pottery, china, porcelain, glass and more. By the end of the alphabet had been used in full and the diamond mark had to be altered to avoid repetition. If you have no registration to hand, try translating the glass registration lozenge example shown here on the right. Between and , the diamond-shaped mark was used.

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