Just came across this again. What a dipstick...of all people to use the phrase, '...the correct term is...'.Reread he did not say sales prop, maybe you got glocoma coming on.
The correct term is salesman sample, this is what muni’s or scale models were call by the guys like my uncle who went from town to town. Selling all sort of things from fishing flies, to coverall.
Selling thing they were contracted to show, and take order got before the internet, or Amazon.