Anyone recognize this delivery van from a Munsters episode background?

I don't recognize it, and don't have any guess...

Dave commented, "Looks to me like and English Thames pronounced "Tems". What do you think?"

You might be spot on Dave, I think you have it... but Chris looked it up on IMCDB.org and nailed it!
Chris commented;
1955-56 Dodge US. Mail truck, rare today, Body was by Fageol
This Dodge postal vehicle built with right hand drive and a flat-head six cylinder engine with a push-button automatic transmission. A decal inside, above the windshield, says: FAGEOL - Pony Express Twin Coach - Kent, Ohio, while a tag proclaims “Post Office #6-A-1101 - Model #C3 - C6 - 95.” A Dodge tag notes - 105 net Hp @ 3600rpm.” The wheelbase of the truck is 95 inches, and the rear door opens like a minivan hatch.
The Twin Coach Company utilized their body manufacturing facilities to produce these "Pony Express" vehicles.
From IMCDB.org