[drc]

Postally used means it's been officially dated by the US Government.

There was were questions about the ages of the Pinkerton postcards/scorecards-- some thought they might be more modern--, but some of the blank backed versions were used as postcards with 1910s postmarks. This was a case where people were glad they were postally used.

I like a nice vintage letter-- with the writing in the appropriate spot, no bleeding to front of course. Just my preference.

Along similar line, I prefer a letter with writing on it to a blank piece of paper. I'm funny that way.

Unless it's a bill of course.