We have never seen another Mosrite "350 Mono" Bass…

1973 Mosrite 350 Mono Bass.

This exceptionally rare, custom-color 'semi-transparent Wine Red' "350 Mono" bass weighs 8.60 lbs. Solid alder body and two-piece medium-profile rock-maple neck with a nut width of 1 5/8 inches and a scale length of 30 1/4 inches.  Single-bound rosewood fretboard with metal nut, zero fret and 20 original jumbo frets frets with clay dot position markers. Specially shaped headstock with "Mosrite of California, USA", "By Semie Moseley" and the Mosrite "M" logo decal in black. Black plastic bell-shaped truss rod cover with two screws. Individual Mosrite of California closed back tuners with crown shaped metal buttons. The serial number "AB 0072" is stamped in blind into the twentieth fret of the guitar. Four-bolt neck plate. Two Mosrite 'Humbucking' pickups with black plastic covers with "Mosrite of California" embossed on the lower edge and outputs of 5.45k and 4.95k. Three-layer (white/black/white) plastic pickguard with eight screws. Four controls (two volume, two tone) plus three-way pickup selector switch, all on the pickguard. The potentiometers are stamped "137 7342" (CTS, October, 1973). Inside the neck cavity , written in pencil is "M, 2". Mosrite metal 'hat type' knobs with "M" stamped on top, numbered from 1 to 5 (one with a "V" and the other with a "T". Jack socket on pickguard on treble horn. Mosrite bridge with four individually adjustable saddles and Mosrite aluminum and rosewood tailpiece secured by three screws. The 'Translucent Wine Red finish is bright and vivid and shows no fade. There is some very light finish checking on the back and a few small and fairly insignificant edge chips. Overall this super rare and all original, early seventies Mosrite Bass is in exceptionally fine (9.00) condition. Housed in it's original three-latch black hardshell case with black leather ends and burgundy plush lining (9.00).

We have never seen another Mosrite "350 Mono" Bass…

"By 1968, when the Ventures deal ended, Mosrite was building about 1,000 instruments a month. In addition to the Ventures models, there were several other lines, each including a short-scale bass. For a short time, a bass player might consider the Joe Maphis Mark X (semi-hollow), the Celebrity CE I or CE II Mark X (double-cutaway, semi-hollow with a deeper body than the Joe Maphis), or the Gospel Guitar Mark X (similar to the Celebrity but apparently "sanctified"). All of these basses were introduced in 1968, and it's uncertain how many were made because Mosrite kept notoriously poor records. Not many, probably. And a year later the company was out of business - for the first time, anyway.

Undaunted, Semie Moseley bought a motor home and went on the road again doing gospel concerts. By 1972 he was back in the guitar business, building V Series instruments that looked an awful lot like the original Ventures models. The line included one- and two-pickup short-scale basses. The born-again Mosrite line also included Celebrity I and II double-cutaway semi-hollow basses and solidbody 300 and 350 Stereo basses. During this period, Mosrite also manufactured some Black Widow basses (double cutaway, semi-hollow) for the Acoustic amplifier company. Not for long, though, as Mosrite went under again in 1974..." (Jim Roberts, American Basses, Pg. 128).