The owner was the famous (infamous) Samuel Cummings.
He was well known as a world-wide buyer and seller of military weapons from pistols up to ships, apparently.
He was one of the hated "Merchants of Death" that bought up the entire surplus arms inventory from a country and sold them new weapons.
The surplus weapons were then sold all over the world, including here in the US.
He started the company in 1940's and got his start buying up WWII surplus weapons.
His company was based in Monaco, and was named International Arms, known as Interarmco, and as a US commercial company as Interarms.
Back in the 1960's I saw a photo of the company dock in Virginia. There were two LARGE freighters full of surplus rifles and pistols being unloaded and several more waiting in the Roads for their turn.
He died back in the 1990's, and his surviving daughter didn't want to keep running the business, so she closed it down.