Welcome to the Glass Message Board, Taco
-- glad you decided to join.
Taco do you know where those 18 went!Please everyone, keep an eye out for these half-bricks!
Here's the same picture from the auction, just embedded. [Wonder what the rights status of this image are? I'd like to use it on my forthcoming Falconnier page]:
Half-bricks are much rarer than full bricks since they were only needed for the top and bottom courses. Find me one and I will exchange it for its own weight in Larks' Tongues, Hummingbird Wings, Butterfly Sneezes, Chicken Lips, Bottled Ghosts, whatever you want!
I had an idea about the brown brick which started this thread: the shape reminds me of pre-cast concrete blocks used to make retaining walls. They are meant to be arranged in curves, hence the angled sides. Using a brick with a [isosceles] trapezoidal section would be better for making a curved wall than the normal brick.
Which doesn't explain the fairly unattractive brown color
. The only 'colored' one I've seen so far ('colored' defined as not clear, not aqua) has been a very nice emerald green, something which would be agreeable in a wall (all green? just the occasional accent?). But a bottle-brown wall, hmm.
The seller wanted a couple hundred bucks for the brown thing, which I wasn't inclined to risk, what with having recently lost > $500 on what turn out to be an irradiated insulator. But it sure seems like a glass brick!