It looks like a Tonka Toy and it made a very popular Matchbox Car back in the day, but I still remember when the Jeep FC-150 Van was the official delivery vehicle for the U.S. Postal Service.

Jeeps came in many forms back in the 50's and 60's, from off-road crawlers to commercial cargo carriers. 

The Jeep FC-150, (FC = Forward Control), built from 1956 to 1965 was the only small truck to combine a short wheelbase with 4-wheel drive. The FC Series of trucks and vans were designed as farm/commercial vehicles to be inexpensive and durable - like most trucks of that era.

Here's a video featuring Mark Allen, the head of Jeep's Design Studio surprising everyone at the 2016 Easter Jeep Safari with his partially restored FC-150, plus a few select add-ons to keep things interesting!