Bagman

n. traveling salesmen (British)

A bag man (or bagman), also known as a delivery boy or running man, is a person designated to collect money in a protection racket. Originally the term applied only to Mafia members collecting for mob bosses, but the term later spread to use in corrupt police precincts where a foot patrolman was the designated "bagman" to pick up and deliver bribes from the local mob(s) to the precinct captain. In many cases, the bagman receives a fraction of the money collected and acts as "insulation" to protect higher-ups from exposure or direct prosecution. The term can also be used for a person who performs small tasks for the Mafia, such as chaffeuring, transportation of goods, or even shakedowns.
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Noun
1. a salesman who travels to call on customers
(synonym) traveling salesman, travelling salesman, commercial traveler, commercial traveller, roadman
(hypernym) salesman
(hyponym) tallyman
2. a racketeer assigned to collect or distribute payoff money
(hypernym) racketeer

(n.)
A commercial traveler; one employed to solicit orders for manufacturers and tradesmen.
  

an eighteenth century term of British origin for a salesperson.