This matrix is designed to identify some of the key differences between the many models available. Please note the following:
  • This matrix contains some key differences between road numbers and versions. There are additional details not listed here.
  • When ordering, make sure to add the '-S' for Sound-Equipped models!
  • All models come painted in black/graphite unless otherwise mentioned.

 August 2006 - Blackstone Models have deleted four versions previously listed for the initial batch of production K27's
Inboard Piston Valve
Road Number Part Number Herald Additional Details
454 B310121 Flying Grande Switcher Pilot/Tender Steps, Backup Light
456 B310122 Moffat Tunnel* Switcher Pilot/Tender Steps, Backup Light
458 B310123 Moffat Tunnel Road Pilot
461 B310124 Flying Grande Road Pilot
461 B310125 RGS Sunrise Road Pilot
Painted, Unlettered B310120 Switcher Pilot/Tender Steps, Backup Light
Outboard Piston Valve
Road Number Part Number Herald Additional Details
452 B310101 Flying Grande Road Pilot, Backup Light
453 B310102 Flying Grande Switcher Pilot/Tender Steps, Backup Light, Square-corner Tender, Doghouse
455 B310103 Royal Gorge** Road Pilot, Green Boiler Jacket
459 B310104 Moffat Tunnel Road Pilot, Backup Light
462 B310105 Moffat Tunnel Road Pilot
463 B310106 Flying Grande Road Pilot, Backup Light
464 B310107 Flying Grande Snowplow, Backup Light, Square-corner Tender
Painted, Unlettered B310100 Road Pilot, Backup Light
Post Wreck
Road Number Part Number Herald Additional Details
455 Post Wreck B310131 RGS Sunrise Snowplow, Post Wreck Tender, details unique to the Post Wreck

*Moffat Tunnel Herald - late 1930's

**Royal Gorge Herald - Pre-1936

The models shown in red and struck through were originally announced and then cancelled

The models shown in blue and struck through have sold out