Identifiers / Alternate Names: Terra is one of the more interesting patterns which was introduced in the 60s. It's characterized by a very dark chocolate brown finish that has lighter orange-brown lines seemingly "scratched" into it. The lines almost appear to be randomly distributed and of random width. The main dark brown finish is very matte in feel - it feels like a handcrafted unfinished glaze. This pattern came in the normal mixing bowls and casseroles but also featured several dinnerware items including handle-less mugs, 9/12" plates and salad bowls. Also known as: Brown Lines, Terra Cotta, Brown Terra, Earth.
Item Type: Handleless Mug
Years Manufactured: 1964 - ?
Values: Check below on Ebay for approximate prices
Sizes and ID#s: No Number (13 oz.)
Original Box#s: 10-T or 13-T
These mugs were given to us by Jackie from the Flickr group. They are handleless mugs in the Terra style which features randomly spaced concentric lines around the sides of the mug in lighter brown and an extremely dark brown (almost black). As is the case with all terra items, the “matte” nature of the pattern makes it particularly susceptible to damage, scratches, metal marks and other wear. We’ve rarely seen Terra items that are perfectly mint.
We do not know the ID number of this style of mug - but it is extremely similar to Military Handwarmer Mugs that Corning produced. Here’s a side by side example with the two mugs.
The older opal white handwarmer mug is a little taller and the walls are a little thicker. The bottom of that mug is also more “round” than the Terra mug. The Terra mug actually has a separte ring (is that called a heat-ring?) on the bottom whereas the handwarmer just tapers toward the bottom. Besides those differences, they are remarkably similar in shape - leading us to believe that the Terra mug was patterned after that older mug.
As far as we know, these Terra mugs are the only mugs that were patterned after the Military Handwarmers. Interestingly, we expected the backstamp on the Terra to be like the Handwarmer - that is a Corning Glassblower logo of some sort. Instead, the Terra mug has a standard trademark Pyrex stamp with a capacity of 13 ounces. We have also seen original boxes where these were sold in sets of four with a box number of 13-T. But we’ve also seen boxes that said 10-T instead. So we’re listing both numbers here.
Selected Pyrex items: