El reloj es un Stocker & Yale, modelo SandY 184.
Puedes encontrar algo de información en éstas páginas.
Y éste articulillo. Dice que por culpa de la alta radioactividad de tu SandY 184, quitaron los relojes radioactivos del ejército USA, por los más modernos de tubos de tritio.
Edito, te lo traduzco en el siguiente post.
Once upon a time...
The security officer on duty in the New Cumberland Army Depot, Pennsylvania, could hardly believe his eyes when he saw the measurements being registered on the 12th of April 1988. The Geiger counter in one of the storage halls had shown considerably increased activity. The cause of the contamination was quickly found:
the SandY 184 military watches in the hall were emitting an unusually high dose of radioactivity. The hands and markings on the dial were coated with traditional tritium phosphorescent paint. In some watches, the readings were up to one hundred times more than what was registered in the past and had been considered safe. The large stock of watches in New Cumberland Army Depot was therefore a security and health risk. The officer immediately informed the relevant military department in the Department of Defense.
The Solution
Thomas Chleboski, Head of the Standardization and Specifications section in the army, acted immediately and deleted the supplier Stocker & Yale from the Qualified Product List QPL-46374, the list which states which companies are qualified to supply wrist watches to the U.S. Army. The news was quite a shock for Jim Bickman, President and CEO of Stocker & Yale in Beverly, Massachusetts, as his company had profited from several lucrative orders for SandY 184 in the previous four years. But Jim Bickman had an idea as to how a real solution could finally be found for the problem of radioactivity in watches. For several years his company had been supplying the army with compasses where a small glass tube filled with tritium gas was used for illumination. The tritium gas light sources produced by the Swiss company mb-microtec with the help of a special laser, were proven not to release any radioactive material whatsoever. Could this groundbreaking lighting technology not also be used for watches?
Maybe but in any case, in order to make this possible, the MIL-W-4637 specification relating to the manufacture of military wrist watches would have to be changed. "So I decided to convince the relevant departments in the U.S. Army to create new specifications for the military watches. Not only that, but I wrote the first draft myself," remembers Jim Bickman. That was the hour in which a completely new generation of military wrist watches was born.