Here are two Yellow green CREBBs (the second B stands for Beehive).

Left: W. Brookfield light Yellow green with amber. Front: Shop Number 10 (dome). At first glance it looks like "just" a 10, but on closer inspection and referring to Walt Baumgardt's book (published post Lee Brewer's book), it is a 10C.1 [BC] which is a 10 that hides a 12. (ARC) W. BROOKFIELD / 45 CLIFF S T / N.Y. It has the 1883 and 1884 dates on the back. It looks to be EIN210, or very close to it. This insulator is in VNM condition with a very tiny pair of white marks in the wire groove at the right mold line and some white mark nibbling for about ¾ inch on the outer edge of the base below "CLIFF" there is also some "micro nibbling else where around the outer edge of the base. There are natural annealing lines in the skirt. $120 plus shipping.

Right: Brookfield Yellow Green. Front: Shop Number 10 (dome). Appears to be a "10b [BC]" in Lee Brewer's book. (ARC) W. BROOKFIELD / 45 CLIFF S T / N.Y. There's extra space between CLIFF and the "S" and extra space between the "S" and the "T". Also, it is a capital "T" and not small, nor underlined, "T". BACK, the embossing begins "PATD" (no apostrophe). The letters and numerals are quite large. The embossing is most similar to the (215) EIN. A major difference with this insulator is the shape of the dome. It's more vertical, narrower and less round than the dome on a normal 1883-1884 CREB . There is a teeny skirt flake near base and a small spot of wire wear and bruise in the wire groove behind the right mold line. There are also natural annealing lines in the skirt. $230 plus shipping.

Note: I am only trying to sell one of these, so I will not discount if you purchase the pair. I will ship to Canada with the declared value equal to the actual.