The cover bears a cachet or special design, usually on the left side portion of the envelope.

All covers must bear a return address in the lower right and should be sent by Feb. 5.

Since the rate between coasts was 10 cents, the cover bears a pair of the 5-centers.

The cover bears the harp, the national symbol of Ireland.

The cover bears an auctioneer's estimate of $4,000 to $5,000.

All covers must bear a return address in the lower right.

Each cover should bear a return address in the lower right.

All covers, with or without stamps, must bear a return address in the lower right.

Each cover must bear at least 25 cents in postage.

All covers must be submitted by May 28 and should bear a return address in the lower right.