The Victorinox Popular (0.6901.20) is a ribbed alox SAK with a simple toolset - Large blade, small blade and a key ring. This tool set has been implemented by Victorinox on a number of 84mm models as well with only a few differences like - Excelsior (0.6900.27 - no key ring), Secretary (0.6900.16 - smooth alox, no key ring), Pocket Pal (0.6900 - cellidor scales, no key ring). It is usually in red alox with silver (/aluminum) cross.
This photo is from a Victorinox catalog from the 1980s showing the difference of the Popular and Excelsior 84mm models.
This is from the SMICO catalog with most of the two bladed-84mm models.
Victorinox Catalog 1980s