Strange indeed. First it's not a '53. It has the under bed fuel tank making it a '47-48. Second it is a long bed ½ ton. I don't think this was offered by Chevrolet so it must be a GMC. But that bed is a mystery.

"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.