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The sign accompanying the Juno I/Jupiter-C missile.

It reads

Jupiter-C

Jupiter-C, a modified Redstone missile, launched many of our early satellites: A Jupiter-C like this orbited the first United states satellite, Explorer I, on January 31, 1958.

Length:	69 Ft.	Lift-Off Weight:	[unintelligible],200 Lbs.
Diameter:	6 Ft.	Thrust:	83,000 Lbs.

The lift-off weight is unintelligible, but sources commonly quote it as 64,000 lbs or 64,070 pounds.