Given the lack of detail in your image, to my eye the closest available digital font is Vonnes Light Compressed

http://www.fontbureau.com/fonts/Vonness/
David Berlow designed Vonness based on Bauer’s Venus of 1907-10 and expanded it to 56 fonts.
This weight existed as a metal font under the name Venus Light Condensed.
I don't know if it is possible to purchase a single font.
As for your 1968 font all I can observe is that this was the era of photo lettering and fonts for advertising and packaging were aften the result of considerable changes in width, height and weight.
Don
p.s. I am not really certain whether this is the compressed or condensed, but this specimen shows the narrower of the two.