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AT 18

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  • Overview
  • Options
  • Video
  • Specifications

The MF5 O is our fully appointed oval hole F-style model. The larger oval sound hole and extra mass of the F-style body produce rich and vibrant tone that is well suited for jazz, swing, classical, celtic and old-time styles. With a high gloss lacquer finish and elegant curves, this mandolin is a class act.

Standard Features Include:

  • Select Adirondack spruce top
  • Premium figured maple back, sides and neck
  • X-bracing
  • Grained ivoroid top/back/neck & peghead binding
  • Grained ivoroid rosette and bound soundhole
  • Black/white purflings
  • Full high-gloss nitrocellulose lacquer finish
  • Bound Florentine-style headstock
  • 13 Degree headstock angle
  • Ebony peghead overlay w/Collings logo and flourish inlay
  • Ebony fingerboard
  • Mortise and tenon neck joint
  • 22-frets, neck joins the body at the 13th fret
  • V shaped neck profile with 1 9/16" string spacing
  • 7"-11 5/8" Compound fingerboard radius
  • 1 3/16" Bone nut
  • 13 7/8" Scale length
  • Medium 18% nickel-silver fretwire
  • Mother of pearl dot fingerboard inlays
  • Fully adjustable truss rod
  • Custom adjustable floating ebony bridge
  • Collings original one-piece nickel or gold tailpiece
  • Nickel or gold tuners with black or pearl buttons
  • Recommended string gauge - D'Addario J-74 (.011"-.040")
  • Collings deluxe hardshell case by TKL

Top Options:

  • Engelmann Spruce
  • Adirondack Spruce (standard)

Design Options:

Finish Options:

Honey Amber Finish

more custom mandolin options

Collings Mandolins: Inspiration by Design

According to mandolinist Kym Warner, one of the most important challenges a musician faces is to "find an instrument that inspires you to want to pick it up and play it."

Jesse Cobb - MF5 O V

Jesse Cobb of The Infamous Stringdusters plays "Big Sciota" on a Collings MF5 O V in honey amber finish.


  • Body Length: 12 7/8"
  • Body Depth at Side: 1 13/16"
  • Lower Bout Width: 9 15/16"
  • Total Length: 27 7/16"
  • Scale Length: 13 7/8"
  • Standard Nut Width: 1 3/16"


  • Factory Strings: D' Addario J-74 (.011"-.040")
  • Recommended Gauges:
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