The Hopkins and Allen Model 1889 Belgian Mausers and Bayonets for them are from beginning in 1915.
"In 1915, Hopkins & Allen entered into a contract with the Belgian Government to manufacture their 1889 model military rifles. This was the first time that H&A had ever been involved with a government contract. They disconinued all commercial production and converted their facilities to fulfill their commitment.
"In less than two years, H&A had lost so much money, they were forced into bankruptcy. At that time, the U.S. Government took over their plant and assigned it to Marlin-Rockwell Corp. to make parts for Browning Automatic Rifles.
"Marlin bought out all of the H&A assets, except the buildings, in 1921 and moved every thing to their factory in North Haven, Connecticut.
“The 1889 Belgian rifles and bayonets were marked HOPKINS & ALLEN ARMS CO. NORWICH, CONN.”
Note from JLM: In the photo shown of the top of the receiver of one of the 1889 rifles, it appears that the marking on the rifle was actually “HOPKINS and ALLEN,” with a much smaller print “and” instead of use of the ampersand (&). It is very hard to read, but I believe I am correct.
Reference: “Falling Blocks & Other Single Shots from Hopkins & Allen,” by Charles E. Carder, 1995, Andrew Onze Publishing, Delphos, Ohio, page 78.