It's also possible the short scratch is duplicated columns. The left end seems to line up pretty well with the right end of the longer one.
Now wouldn't that complicate things.
I have to say I'm very happy how things have worked out. Pat has done the bulk of the heavy lifting. At one point I thought I'd gotten pretty far, with my little jigsaw puzzles where I drew in the scratches and lined them up.
Then Pat sent me scans of something like double the amount I'd found to that point. That he's included stuff where a back flaw and front flaw match consistently is a big bonus.
I'm not sure we'll ever get to knowing the size of any sheet, but having things taken so far is cause for hope.
In stamps, it's called "plating" where through study we can know exactly where on what sheet a stamp was. It usually takes decades to really get it down, and even the heavily studied ones still have new discoveries made nearly 100 years after the first published results. And that's with the sheet size being known
To have an approximate size and layout without knowing the sheet size is some amazing work. Probably one of the best I've seen in any of my hobbies.
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