It looks kosher doesn't it? Is that what your setup looked like? The 14" floor is nice and clean. My 14" was added afterwards by someone and it's been well played. Nice condition overall on that kit.
Wish that I had better pictures, but here's what I have from around 1963. the snare is suspended from a Swivo mount. That "extra" mounting receiver doesn't look extra to me. The last blurry picture shows the Swivo hex rod from the snare mount on the right side.