Imperial Glass Jade was introduced in around 1960. Then again in 1980-1983 (Imperial Glass By Lenox which took over Imperial Glass in 1973).
Rocky's vase dates to 1960 by the Imperial mark on the bottom ( I superimposed over G) which was used from 1951 to 1973. The vase is called The Hun (Lovebirds).
See the "Imperial Glass Encyclopedia Volume II "page 370.
