Used on The Endless River, as mentioned by guitar tech Phil Taylor in this February 10, 2015 Music Radar interview about the contents of Astoria.

“David has a 1963 Fender Bass VI. It’s strung relatively light for a baritone. But it’s still a 30-inch scale, so I thought I’d get him a new one made. I wanted it to be more like a guitar, shorter scale, but it also had to have a vibrato on it. I talked to Fender, and they made two."

They have a 27-inch scale, so between a guitar and a bass. You can put lighter strings on these, it feels very nice. But I had to change a few things - I put a Vibramate String Spoiler on the back-end of the Bigsby and replaced the electronics with Callaham Cryo electronics. I wanted to get as much detail out of the strings as possible.

“The strings were unbalanced on the regular Fender Tele pickups, so I got Ron Ellis to make some custom baritone pickups. I was very pleased, thought it was marvellous. But it sat here for a year before David even picked it up!

"Only for The Endless River, was it played. We were here with (co-producer) Youth, who said David maybe needed a more baritone sound. David shrugged and says, ‘Okay... have I got a baritone?’ Finally, he played it.”

In 2019, the guitar was auctioned off for $68,750 as part of Christie's The David Gilmour Guitar Collection auction with the following item description:

FENDER MUSICAL INSTRUMENTS CORPORATION, CORONA, 2010 A SOLID-BODY ELECTRIC GUITAR, TELECASTER CUSTOM BARITONE At the peghead Fender TELECASTER, the reverse with logo Custom Shop, the finish black with white binding, in original hardshell case bearing a label inscribed FENDER BARITONE TELE #1 NO S/N; accompanied by a color photograph by Phil Taylor of David Gilmour playing this guitar in his East Sussex studio circa April 2014 Length of back 15 ¾ in. (40 cm.)

This guitar was custom-made for David Gilmour by Fender Custom Shop in 2010 and kept primarily for studio use. A baritone guitar incorporates a longer scale length than a normal guitar and is tuned either in a perfect 4th (B, E, A, D, F#, B) or perfect 5th lower (A, D, G, C, E, A) than a standard guitar tuning. This allows for deeper voicing than typically heard with guitar performance. Gilmour’s guitar technician Phil Taylor liaised with Fender to build a baritone on a shorter scale than his 1963 Fender Bass VI (lot 30). The resulting guitar has a 27-inch scale, placing it between an electric and bass guitar in terms of size. It was further modified with a Vibramate String Spoiler and custom baritone pickups, and the electronics replaced with Callaham Cryo electronics. At the suggestion of album co-producer Youth, Gilmour used the baritone guitar during recording of Pink Floyd’s fifteenth studio album The Endless River, notably on the track It’s What We Do. Material from the 1993 recording sessions for The Division Bell was revisited and reworked with 21st Century digital technology and supplemented with new material recorded between 2013 and 2014 at Gilmour’s Astoria houseboat studio. Released in November 2014 as a tribute to keyboardist Richard Wright, who had passed away in 2008, the predominantly instrumental album debuted at number one in the UK, France, Germany, Portugal, Ireland, the Netherlands, Belgium, New Zealand, and Canada. The guitar was subsequently enlisted for performances of Run Like Hell during Gilmour’s Rattle That Lock Tour from 12th September 2015, played by longtime Pink Floyd collaborator Jon Carin during the first three legs of the tour and thereafter by Chester Kamen for the final two legs through to 30th September 2016.