I had never heard this one before--what a great groove! Interesting to see at Praguefrank's Country Music Discography
http://countrydiscography.blogspot.com/ ... ed%20Jerrythat it's a recording from November 1965, predating 'The Claw' by nearly a year (October 1966)
In checking it out, it sounds to me as if it's a Drop D tuning--the fifth bar has a great big open sixth string 'D,' off of the instrument if it were in standard tuning. The whole guitar is tuned down, but less than a half-step (adjusting the Amazing Slow Downer's pitch to be up 36 cents brings it up to concert pitch).
By the way, I've been teaching a weekly guitar lab at Berklee College of Music, dedicated to the music of Jerry Reed. Craig Dobbins' two Reed books are texts for the course. So far, we've covered 'Scare Crow,' 'Drive In' (as played by Chet on And Then Came...), 'The Claw', 'Papa's Knee,' and, this Monday, thanks to you here, 'Navy Blues'!
Incredible to see the 1957 appearance of Chet on the Garroway show too! Keep up the good work, Phil!