Roulette Perforations On 384

I recently picked up this pair with vertical roulette perforations. It looks like a privately perforated coil pair, but as I understand it, these were made for use in vending machines, so I would think that the bottom selvage would have been trimmed off to get it down to the right size. Can anybody help me identify this?

These stamps were not rouletted for a vending machine. On occasion imperf sheets would be rouletted by a hand held tracing wheel to make them easier to get apart without the use of scissors.

A couple of the known roulette types are the Kansas City, Cleveland and Wilson roulettes. I don't believe any of these are known on #384.

What you have is a private perforation of unknown origin. It's a nice piece with the plate # but I'm pretty sure that's all we can tell about it.

Hmmm. I was thinking this was a private coil pair because of the straight edge at the top. If it had been rouletted for a non-machine purpose, wouldn't it would be rouletted both ways?

Not necessarily... a postal employee could just as easily
cut long horizontal strips after perforating a 384 sheet
vertically...

I believe if you subject the top and bottom edges to high
magnification it will clearly demonstrate a scissor cut
versus machine cut...

What would I look for to identify a scissor cut? The bottom edge is presumably natural. The top edge is perfectly straight, though it diverges from the bottom edge by ~1mm from left to right (narrower on the right). I don't have a good way to take a picture of the top edge under magnification, but at 60x, it looks like a clean cut to me.

It's easy to make a clean cut with a scissor...
every point from corner to corner would have
to be perfectly parallel with the bottom edge
to be have been machine cut...

60x wouldn't provide sufficient magnification...
it would require at least 600dpi... 1200dpi
would be optimum...

No horizontal coil could possibly as high as this one. The stripper blades were about 25mm apart for horizontal coils, this looks about 30mm apart. It is a private roulette of unknown origin.

Yes, looks like both were cut with scissors as this software magnification shows...both are equal...in my opinion.