The 48-215 or FX went on sale on the 29 November 1948.
The first Wham-O Frisbee went on sale in 1948.
The first Kindle went on sale in November 2007.
it went on sale in 1944
Already been built. The iPad 3 went on sale March 2011. The iPad 4 went on sale November 2012.
1977
Stamps first went on sale in October 1854 in India.
Good Housekeeping
I believe 1st Mustang was a 1964 1/2 that went on sale the Spring of 1964.
It was first made in 1978 and went on sale on the 1st of July 1979.
The Apple I went on sale in July 1976 and was market-priced at $666.66 :)
The first Austin guitars went on sale in 1902, and they sold for approximately one hundred dollars. They were a big hit, and a large number of people bought them.