In this photo, Billie Joe is playing Gretsch G6123 model. This guitar was also used for Trilogy recordings, and it can be seen in a lot of short videos uploaded from Green Day.

Here Paul is playing a somewhat rare 1967'ish Gretsch G6123 Monkees model guitar in what appears to be the period when he was with The Jam. This guitar is very distinctive because is has the "Neo-classic" fretboard markers on both sides of the fretboards.

Was used in the music video for When I Wake Up Tomorrow

[From Glen Campbell Forums]

The Gretsch Monkees model guitar is a rare relic of one of the more off-the-wall of 1960's Gretsch endeavors-an endorsement deal to provide instruments for the Monkees TV show. The "Monkees Rock"N"Roll Model" was specifically designed to be a relatively affordable but flashy guitar to hopefully appeal to the group's giant teenage audience. Having seen a massive spike in demand for the company's guitars after Beatle George Harrison appeared with one in 1964, Gretsch likely saw the Monkees TV exposure as another marketing coup. Although it didn't quite work out that way, the Gretsch-Monkees link did create this fairly unique instrument and lead to a lasting association between the company and the group. The actual Monkees Model appeared in only 4 episodes, part of the last batch filmed in the autumn of 1967. The Monkees model never appeared in Gretsch literature, but a limited number were produced from late 1966 through the summer of 1967. There were less than 150 made. Rick played guitar on There's No Me... Without You, on the Ghost on a Canvas album. I assume Rick brought the Gretsch 6123 and Glen was able to use it while they did the Ghost on a Canvas video.

Used in TV show only, not live or on record.