On the left is what appears to be an aqua CD 134 Pennycuick product. Next to it is a Hemingray 19 in two-tone aqua-clear. This is the only two tone Hemingray that I have known of in this particular locale. The rest of them (all 19's and clear-aqua to varying degrees of color separation) were once used on the Stoughton, MA fire alarm system. There were dozens of them in that community. The last of them was in service until about 20 years ago.