The Gerry Mulligan Sextet, Presenting the Gerry Mulligan Sextet, 1955 on EmArcy.
Cover has white flocking where the old glossy cover delaminated, bit the record is in great shape.
Mulligan on baritone sax, with Peck Morrison (bass), Dave Bailey (Drums), Zoot Simms (Tenor Sax), Bob Brookmeyer (Trombone), and Jon Eardley (Trumpet).
This is just after splitting with Chet Baker (and after Mulligan did time on heroin charges in 1953).
Via Mill No. 5 threads & grooves market