Interesting Postage Due Item

While I normally confine myself to revenues when it comes to U.S. material, if I see something that is unusual or trips my "Neat-O!" meter, I'll pick it up. Thus was the case this morning when I stopped by my local philateilc watering hole. My dealer had found this in a lot he bought, thought it was different, and asked if I wanted it.

It's a church newspaper from 1932, with a postage due label attached to it and 2 postage due stamps paying 1.5 cents owed.

The reason I bought it is that 1/2 cent is just an "odd" denomination to me, and I hadn't seen one on a piece before.

Also, why does the label say it is 2nd class matter, but the postage due is at 3rd class rate?

When I got home I tried to find other examples online of J68 used on cover and could not find any that were not philatelic (the only on-cover examples I found are first day covers). I figure that it's either because it's fairly scarce, or that it's so common and valueless that it's not worth anything... but usually on ebay, between current and completed listings, I can find at least one listing for just about anything... but not here. I can't even find any images or discussions through Google about a J68 on cover or piece.

So is this something that has value or just an interesting (to me) oddity?

Maybe that 1½ cents is a fee and not postage due? There's no way to collect a "fee" except through postage due stamps; that might explain the perceived discrepancy between 2nd and 3rd class treatment.

In my mind, the "fee" is for providing the new Dale St. address and returning the paper to the church.

It wouldn't otherwise make sense, except that it was just the law:

From http://about.usps.com/who-we-are/po...-history.pdf

Yes, that's what I was thinking of. I would not have known how to find it, so thanks, cjd.