The Union Pacific Railroad and the Aluminum Company of America (ALCOA) issued these aluminum items in the 1930's and 1940's for advertising purposes. One token was manufactured to advertise a motion picture.

Aluminum, 32 mm, 3.22 gm
Obverse:
Railroad engine
UNION PACIFIC / LUCKY PIECE / 1934
Reverse:
A SAMPLE OF THE ALUMINUM IN THE NEW / UNION PACIFIC TRAIN
BUILT BY PULLMAN CAR & MFG. CORP.
ALCOA ALUMINUM / ALUMINUM CO. OF AMERICA
GREEN DUCK CHI (Chicago Manufacturer)

This item was possibly issued in connection with the Chicago Century of Progress Exposition 1933-1934.

Aluminum, 32 mm, 3.29 gm
Obverse:
Golden Gate Bridge, sunset, fair building
GOLDEN GATE INTERNATIONAL EXPOSITION / 1939 / SAN FRANCISCO BAY
Reverse:
Two railroad engines, shield logo of Union Pacific
ROAD OF THE STREAMLINERS AND THE CHALLENGERS / UNION PACIFIC
UNION PACIFIC - THE OVERLAND ROUTE
ALUMINUM IN THESE FAMOUS TRAINS FURNISHED BY / ALUMINUM COMPANY OF AMERICA

Aluminum, 32 mm, 3.45 gm
Obverse:
Railroad engine
CECIL B. DE MILLE'S / MOTION PICTURE "UNION PACIFIC"
Reverse:
Shield and two railroad engines
ROAD OF THE Streamliners AND THE Challengers / UNION PACIFIC
UNION PACIFIC - THE OVERLAND ROUTE
ALUMINUM IN THESE FAMOUS TRAINS FURNISHED BY / ALUMINUM COMPANY OF AMERICA

The film is a fictionalised account of the building of the railroad across the American West. It starred Barbara Stanwyck and Joel McCrea and was a big hit at the time.

For more information on this film, please visit: Coins in Movies - Union Pacific (1939)

Aluminum, 32 mm, 3.35 gm
Obverse:
Shield and railroad engine
UNION PACIFIC / ROAD OF THE Challenger
Reverse:
SERVES ALL THE WEST / 1940 LUCKY PIECE
Shield and railroad engine
UNION PACIFIC / ROAD OF THE Streamliners
ALUMINUM IN THESE FAMOUS TRAINS FURNISHED BY / ALUMINUM COMPANY OF AMERICA

Aluminum, 32 mm, 3.33 gm
Corroded version of above token.