Columbia Overprinted

I can't find these stamps in my catalogue, someone wrote 107 on the clip of paper and I'm certain that is not the catalogue number. In my book anyways.
Are any of you serious Columbia collectors? Or do you know what they are? Wait a moment... Is that a Panama overprint? Yep. Hmmm, probably not the double overprint listed, though I could argue that it's got 2 overprints. They are probably referring to a set actually stamped twice. Not to mention, this is a pathetic condition for a stamp to be in. Some people just can't throw anything away I guess.

Here's a Columbian stamp now. Kinda tricky there.

This summer is turning out to be a wicked hot one.

JimmyB