Uncataloged O Gauge RailKing 3-Dome Tank Car Announced

February 19, 2026 - M.T.H. Electric Trains has announced an exclusive and uncataloged RailKing O Gauge 3-Dome Tank Car in unique Pennsylvania Reading Seashore Lines livery for M.T.H. Authorized Retailer Holly Beach Train Depot in Wildwood, New Jersey.. These cars will be available in two unique car numbers, each in extremely limited quantities beginning in June 2026.

Item No. 30-73669 Pennsylvania Reading Seashore Lines 3-Dome Tank Car
Car No. 0001
Early Order Price: $79.95 (plus freight)

Item No. 30-73670 Pennsylvania Reading Seashore Lines 3-Dome Tank Car
Car No. 0002
Early Order Price: $79.95 (plus freight)

ABOUT THE RAILKING 3-DOME TANK CAR

Three-dome tank cars were actually three complete tanks on a single car body. Each tank had its own end bulkheads and expansion dome. Since older tank cars were filled to the top of the tank to prevent fluids from sloshing around during shipment (which could make the car unsteady), the domes provided space for the cargo to expand when the sun heated the tank. Because the additional bulkheads and domes added weight, multiple-dome cars had a smaller capacity than single-dome cars.

These cars were popular with customers who needed several varieties of a single product, such as different grades of lube oil or gasoline. They were also used for customers who did not need a full car of product. While smaller-volume shipments have largely gone over to truckers today, Union Tank Car built new multiple-compartment cars as recently as 2010. They’re harder to spot in today’s trains, however, because modern tank cars do not have expansion domes.

OPERATING FEATURES

• Intricately Detailed, Durable ABS Body
• Colorful, Attractive Paint Scheme
• Metal Wheels and Axles
• Die-Cast 4-Wheel Trucks
• Fast-Angle Wheel Sets
• Needle-Point Axles
• (2) Operating Die-Cast Metal Couplers
• Detailed Brake Wheel
• Separate Metal Handrails
• Near-Scale Proportions
• Unit Measures: 10 1/4" x 2 3/8" x 3 9/16"
• Operates On O-27 Curves

EXCLUSIVELY AVAILABLE THRU

Holly Beach Train Depot
4712 Pacific Avenue
Wildwood, NJ 08260
609-522-2379
www.hollybeachtraindepot.com
hollybeach.trains@verizon.net

M.T.H. Electric Trains will be releasing the 2026 RailKing O Gauge 4-Bay Cylindrical Hopper Cars in FOUR roadnames this Summer. Each car will feature "Map" graphics reflecting their respective roadnames routes. They will be available in extremely limited quantities and are expected to begin shipping to M.T.H. Authorized Retailers in August 2026.

Check out each of these offerings HERE.

These items are available to order from your local M.T.H. Authorized Retailer.

M.T.H. Electric Trains will be releasing the 2026 RailKing O Scale MP15 AC/DC Diesel Locomotive in SIX roadnames this Summer. Each locomotive will be available in extremely limited quantities and are expected to begin shipping to M.T.H. Authorized Retailers in June 2026.

Check out each of these offerings HERE.

These items are available to order from your local M.T.H. Authorized Retailer.

M.T.H. Electric Trains will be releasing the 2026 RailKing O Gauge Box Car w/Power Meter in FOUR different schemes this Summer. Each of these offerings is expected to begin shipping to M.T.H. Authorized Retailers in July 2026.

Check out each of these offerings HERE.

These items are available to order from your local M.T.H. Authorized Retailer.