Multifaceted modular sign system and components

In a modular sign system, a unit comprising, in combination,

• a) a back frame having a thin backplate and a thin wall outstanding from the backplate and bounding a recess formed in front of the backplate,
• b) support posts outstanding relative to the backplate at spaced locations in said recess, the posts having lesser height than the wall,
• c) and one of the following:
• i) a faceplate received over the recess and supported on and by the posts, the faceplate having a bounding edge which is closely bounded by said wall,
• ii) a faceplate received on and supported by the said wall, substantially to close the recess, said faceplate adapted to carry sign information, and the backplate adapted to be carried adjacent a supporting surface,
• d) at least one of said back frame, support posts and faceplate consisting of molded plastic material,
• e) and an auxiliary plate received in he recess and carried by the back frame, the posts integral with said auxiliary plate,
• f) and wherein said auxiliary plate comprises multiple subplates each carrying one or more posts,
• g) and including fractuable break-away connectors connecting said sub-plates in side-by-side, spaced, sequential relation.