That's so faded, it almost looks like white numbers on black. Someone needs to rescue that poor thing
it is one of four known state-named shields in Tennessee (not counting the ubiquitous post-1982 state route markers). No known state-named interstates (please! won't somebody find one for us!) and that US-25E, a pair of US-78s in Memphis...
the remarkable thing about that 78 pair is that they sit on current, mainline US-78 - not an obscure side street or anything. the only reason no one has gone and stolen them yet is that they are difficult to remove (you'd have to set your stepladder into the middle of traffic) and too badly worn to be all that valuable.
and there is another 25E which is clearly of recent, local manufacture, but it they must've decided to carbon-copy an older sign, because it says "Tennessee US 25E", just like back in the day. the shield shape is wrong, the fonts are wrong; I do not yet have it uploaded to the shield gallery but apart from it being a rude facsimile of a classic sign, it really isn't much to write home about. let's just say I found out that it existed about 6 months ago, and I have not yet knocked over heaven and earth to log into Orbitz and book a plane ticket to photograph it.
I also know of two of the old triangle route markers with the TENN... a 68 and a 99. So that makes six old-style markers in existence in TN.