Photo courtesy of David Backlin (taken August 2006)
If you look at a Missouri state map, you might think that Missouri 76 ends at its intersection with Missouri 43 in McDonald County. Instead, as this sign assembly shows, the two routes link up to run concurrently for three miles into Tiff City, on the Oklahoma border.
Also note the variations in fonts between the two markers. The font used for the 43 marker appears to be using an optically expanded version of Series B rather than the standard Series C font used for the 76 marker.