The medal's obverse bears winged female over ocean, bundle of lightning bolts in one hand, thick cable in other.  Around top, ALL AMERICAN CABLESl signed over ocean surface at middle right, KILENYI

The reverse shows coastal scene with 4 native American Indians on promontory signaling the arrival of a Sailing Vessel with smoke signals.  Around top, FROM THE FIRST SIGNAL FIRES TO ALL AMERICA CABLES.  At bottom, COMMEMORATING / FIFTY YEARS / OF SERVICE / TO THE AMERICAS / 1878 * MAY * 6 * 1928

All America Cables was formed in February 1920 when it took over the assets of the Central and South American Telegraph Company.  In 1938 All America Cables merged with the Commercial Cable Company and Mackay Radio & Telegraph to from the American Radio and Cable Corporation

From All America Review, June 1928:

On Tuesday, May 8 [1928], President Merrill called to his office all members of the New York staff and presented each individual with a medallion, commemorating the Fiftieth Anniversary of the founding of All America Cables, Inc. He shook hands with each person and thanked every man and woman for the faithful service he or she had performed for All America Cables. Medallions for the employees outside of New York are being sent to the various stations and should be in the hands of all within another month.

The medallion is a singularly beautiful thing and everybody was impressed by its attractiveness. The design was executed by Mr. Julio Kilenyi, an artist and sculptor of international fame. Mr. Kilenyi first studied at the Royal Fine Arts School in Budapest and continued his studies in Germany and in France.

After considerable work in Europe, he went to South America and spent several years in Buenos Aires where he established an enviable reputation as a portrait sculptor. He came to the United States about ten years ago.

In medallic art some of his most celebrated examples have been the portraits of Woodrow Wilson, General Pershing, Thomas A. Edison, Elbert H. Gary, Mark Twain, Charles W. Elliott, and Lord Northcliffe. He designed the President Coolidge Inauguration Medal also. In addition to these he has made medallic portraits of many other dignitaries of the Church and of many who are celebrated in the Commercial world.

Among the models which Mr. Kilenyi has executed and from which medals have been struck are those for the Official Lindbergh medal, the Byrd North Pole medal, the Curtis N-C 4 Atlantic Flight medal, the Battle of Bunker Hill medallion, the Battle of Lexington medallion, the Plymouth Tercentenary medal, and the Republic of Peru Centenary medal.