Issued in 1967, this four-stamp set from the Netherlands Antilles honors the 60th anniversary of the Netherlands Shipping Company (1907–1967). Each denomination features a distinct vessel type representing maritime evolution:

• 6c: Armored ship (Pantserschip) in green.

• 10c: Sailing ship (Zeilschip) in orange.

• 20c: Tanker (Tanker) in brown.

• 25c: Passenger liner (Passagiersschip) in blue.
  The clean, minimalist design emphasizes the nation’s strong nautical identity and long maritime heritage—an appealing thematic issue for collectors interested in ships, transport, and Dutch colonial philately.