Vintage Union Pacific 4000 Steam Locomotive Lapel Pin

Nice, rare and harder to find "4000" line pin.

Union Pacific 4000 represents the prototype of the "Big Boy" 4-8-8-4 simple articulated steam locomotive, known for being the largest and most powerful steam locomotives ever built and symbolizing the peak of steam locomotive design and engineering in the mid-20th century.

Pin measures just over .5 inches tall and wide.

Pin is in very good condition.