The first operational supersonic jet bomber to reach Mach 2, the delta-winged Convair B-52 Hustler was in operation from 1960 to 1970 when it was replaced by the F-111. Marx, ever wanting to produce toys mirroring the latest technology, especially aircraft, had it's Japanese Linemar division produce these little gems as a continuation of the latest and greatest in aircraft advancement. Marx also made a larger version with much more detail which now commands premium prices, but this little guy is generally more reasonably priced. It measures 7 1/4" (18.4cm) L x 6 1/4" (15.9cm) wingspan x 2 1/2" (6.4cm) H. Enjoy!
Courtesy Wikipedia: http://en.wikipedia.org/wiki/B-58_Hustler