K-Line by Lionel 6-21721 Roadway Sign Set – O Scale Warning Pack (12) – Authentic 1:48 Gauge Accessories
Bring realism and storytelling to your O scale train layout with this K-Line by Lionel 6-21721 Roadway Sign Set. Produced under Lionel’s respected K-Line brand, this 2008 release includes a 12-piece Warning Pack featuring classic yellow roadway signs that capture the authentic look of America’s highways and neighborhoods. Each sign comes with a molded “rock base” for simple installation, making them easy to position along roadsides, crossings, or urban scenes.
✔ Set Includes (12):
Bicycle Crossing
Pedestrian Crossing
Slippery When Wet
School Crossing
“Slow – Children at Play”
Tractor / Farm Machinery Ahead
Deer Crossing
And more classic caution signs
✔ Key Features:
Official K-Line by Lionel accessory (Stock No. 6-21721)
O Scale / 1:48 Gauge – perfectly sized for Lionel, MTH, K-Line, Atlas O, Williams, and other O gauge layouts
Molded rock-style bases included for quick setup
Durable construction with crisp black-on-yellow warning graphics
Adds realism and depth to cityscapes, rural roads, and suburban neighborhoods
⚡ Historical Note: K-Line began as a competitor to Lionel, producing detailed, affordable O scale trains and accessories in the late 20th century. By 2006, Lionel absorbed K-Line into its product line, ensuring many of these accessories—like the roadway sign packs—remain highly collectible today. The 2008 date on this set places it in Lionel’s first wave of K-Line reissues, making it both a layout essential and a piece of hobby history.
✨ Why Collectors & Operators Love It:
Enhances visual storytelling on layouts—signs can be placed near crossings, stations, or scenic roads
Rare factory-sealed pack from Lionel’s Limited K-Line runs
Perfect for both operators looking to build realistic dioramas and collectors who value sealed, vintage Lionel accessories
📏 Scale: O Gauge (1:48)
📦 Condition: New in original sealed package (2008 issue). Some minor shelf/storage wear visible on packaging, signs inside untouched.
This is an authentic Lionel accessory that blends seamlessly into vintage or modern O gauge setups. Whether you’re completing a roadway scene for your Polar Express, postwar Lionel layout, or modern-era operation, this Warning Pack delivers detail, nostalgia, and display value.
Add realism, collectibility, and history to your railroad empire with this Lionel 6-21721 Roadway Sign Set today.
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