Decor and furniture
Sign Decal Wood 5x3
It's a sign. You write things on it.
Harvest drops
Wood× 2
Taken apart with a harvesting tool (axe, pickaxe, shovel), before perks and tool bonuses.
When it collapses
Falling, it leaves 
Wood Debris (Terrain) (75% of the time) where it lands.
Where to find (10 POIs)
Jim & Tim's Bullets and Booze (tier 3), Junkville Saloon (tier 3), Law & Order Square (tier 3), Booze Hound Brewery (tier 2), Pink Penny's (tier 2), Treats Terrace (tier 2), Bert's Brewery (tier 1), Drive-Up Coffee, Eric's Stuff, Rhythm & Brews District.
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.