Mr. Greg A. Caron (USA), has submitted the following images of two imperforate sheets, printed by the American Bank Note Company, showing each of the individual athletes depicted on the single labels (see page 1).  The sheets were auctioned on the Cherrystone Auctions in New York late 2002, and realized each USD 350.00 including buyer's premium.  

Both of the sheets are numbered, the sheet immediately below (maroon) as No. 250/4, and the other sheet (grey-blue) as No. 250/8, implying that there exist 250 sheets of each colour. 

Imperforate Boxer Sheet - maroon, No. 250/4.

Imperforate Boxer Sheet - grey-blue, No. 250/8.