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Mantua 310-03 1880 Union Pacific 4-8-0 "Mastodon" Twelve Wheeler HO Scale

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Mantua 310-03 1880 Union Pacific 4-8-0 "Mastodon" Twelve Wheeler

This MRRHQ Collectible HO Scale Mantua 310-03 1880 Union Pacific 4-8-0 "Mastodon Twelve Wheeler" Locomotive is a magnificent example of the "Iron Horse", the locomotive that spanned the plains and did so much to open the West. Its' ornate and colorful decoration, with gleaming brass parts, earned for it the title of the "Belle of the Plains". Offered by Mantua for only two years, and in only two road names, this rare and spectacular locomotive class of models are some of the most striking to ever grace the rails.


  • C-9 Mint Condition with Very Good Original box.
  • MRRHQ Locomotive Works restored, serviced, tested and certified.
  • Little or no indication of run time.
  • Operating Headlamp.
  • One-piece boilers, engine covers, cabs and tenders of pressure-cast Zamac high impact plastic.
  • Castings are sharp and clean and include highly detailed boiler fronts, smoke stacks, valves, pipes and rivet heads.
  • Real Brass hand rails, fittings, ornate steam domes and tender pick-up wheels.
  • Powerful Pittman style 5-pole motor.
  • Smooth, quiet nylon gears assembled on knurled axles.
  • Authentic brass hex-head screws for spacer-assembled side rods.
  • Replaceable long-life brass axle bearings.
  • Easy rolling steel needle point truck axles.
  • Heavy cast metal locomotive and tender frames.
  • Upgraded with working rear Kadee all-metal Knuckle Coupler.
  • BOTH Wood and Coal Tender Loads Included.
  • Optional Upgrades Available:
    • TCS T1 Standard DCC Decoder.
    • TCS T1 Standard DCC Decoder w/Keep Alive Installed.
    • TCS WOWSound 101 DCC/Sound Decoder Installed.
    • MRRHQ Custom Directional Soft White LED Tender Lighting Installed.
    • Engineer Figure Installed in Cab.
  • Mantua Catalog 1978-81.
  • Check the "Blog" section of this Website for historical information about this legendary locomotive class.

HO Scale 1:87

Dimensions: Locomotive 6 1/8 x 1 3/8 x 2" Tender 3 3/8 x 1 3/8 x 1 1/2"

Made in U.S.A.

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