Yes, Jantex double-sided rim tape!!! What a sweet memory!!! And I never rolled a tire. The stuff had an odd smell, somewhat like creosote. It was so sticky to use, I came up with the idea of putting a new roll in the freezer for a few hours, before mounting a tubular. In very hot weather, glue would ooz out along the base tape. Centrifical force then caused the glue to form radial lines on a tire's sidewall.
Michael Allison
New York, NY