This shiny new government-approved sign is struggling with local approval.
9404V is further up past 9404W on the FS Topo map (Yavapai County Parcel Map calls this FS706 all the way) so maybe the guy that installed it immediately clocked out and hit it with a Louisville slugger.

We passed a small 83 sign turning off Yankee Doodle Trail. The FS Topo map agrees with a tiny 83 there and an 83 in the private property parcel.