FDC 731A Color Help

Hi, I've been going through a box of FDC and comparing them to recent bid amounts, and looking at the colors and overall condition. One example I found used different colors on the same cachet. So, can anyone tell me why two colors were used and also, who made the cachet.
Thanks,
Curt

The cachet was made by Harry Ioor or Indianapolis, Indiana. The different colors were used because that probably what he felt like using the day he printed the design. On the 5c Kosciusko stamp, he printed designs in multiple various from multiple cities.

Do an ebay search on "743 Ioor" to see some of the many color variations.

That's one of the joys of collecting FDCs from the 30's and 40's. Cachet designers were having fun. Finding color varieties is common; and since there are no decent catalogs available, your collection is never complete because there just may be a purple one out there! Harry Ioor, LW Staehle and Ken Boll are some that are notorious for not only color varieties but also design varieties. Staehle often did 8 or 10 different cachets for a single issue along with color changes.
It's madness!! But FUN too.

wc

Thanks for that info, Glenn. It will give me a great place to continue my research.
Curt

I presume you are aware of Planty and Mellone, and this is therefore a comment on what you think of them. I agree to some extent: they are incomplete, often in error, and in black and white. But at least we have them. After 1970, we don't even have those.

Basil