Archives for November 2007

Rookwood Pottery Marks

We receive a lot of emails asking for information on American art pottery.  Rather than just responding to collector’s emails I am going to try answer more of these questions in blog posts. 

This morning a new Rookwood pottery collector emailed asking for an explanation of the various marks on the bottom of his vase.  The following summarizes the basic marks seen on Rookwood Pottery

The most recognized logo in Rookwood history is the backwards R and P.  TPict0638ahis logo was used on virtually every piece of Rookwood produced from 1886 until the end of production in 1967.  Between 1886 and 1900 one additional flame was impressed around the logo for each year; such that in 1900 fourteen flames surrounded the Rookwood trademark.  For example the photo to the right shows the Rookwood trademark with 8 flames indicating this vase was produced in 1894.  Beginning in 1901, the company stopped adding flames to the logo and started using roman numerals below the fourteen flame trademark to date the pottery.  The use of Roman numerals to date Rookwood continued until the end of production in 1967.

In addition to the Rookwood flame trademark, the company marked its pottery with a corresponding shape number.  Pict0077aRookwood can be found with shape numbers running from 1 to 7301 impressed on the bottom of the pottery.  Each shape design could be produced in multiple sizes.  Rookwood sizes were defined with the letters A, B, C, D, E and F with A representing the largest size in a particular shape and F the smallest.  Rookwood size letters were impressed and typically found right after the shape number.  An example of the shape number and size notation can be seen in the photo of the bottom of the 1906 Rookwood vase to the right. 

Decorated Rookwood pottery will have similar markings with the addition of the artist’s initials or cipher and often glaze notations such as V for vellum glazes, W for iris glazes, SG for sea green, etc.   

Greg MyrothShop for Rookwood Pottery

Fake Grueby Trademark on McCoy Pottery Vase

We were recently contacted by a fellow art pottery collector who was trying to find out about the history and value of her Grueby pottery vase.Mccoy_with_grueby_stamp  When the collector emailed us photos of her vase, I recognized the piece as being a 1930s McCoy matte glaze vase.  At first I thought the collector had simply mixed up the photos and sent me images of her McCoy pottery vase instead of the piece of Grueby.

However, after a closer look at the photo of the bottom I noticed it was stamped with a fake mark which included words Grueby Pottery, Boston and the lotus flower trademark.  Fake_grueby_stamp_3

Thankfully the mark is not at all close to authentic Grueby pottery trademarks and would likely not fool anyone other than the most novice pottery collectors. Since it was a fake Grueby trademark I had not seen previously I thought readers might find it interesting to see photos of the vase and stamp.

Greg Myroth – Selling Authenic McCoy and Grueby Pottery