Some things I find interesting.
 Hope you also do....

 
Disabled American Veterans (DAV) 29¢ Franking

Following are examples of DAV covers franked with twenty nine cents postage.  The 29¢ rate period began on February 3, 1991 and ended December 31, 1994. 

All the covers on this page are franked with the intaglio printed version of the Circus Wagon. The overall tagged stamps are Scott 2452, Krause-Minkus 931. Those untagged are Scott 2452a, Krause-Minkus 931z.

Precisely dating these covers is difficult as the covers are "mint" examples and do not have any cancellations.  Some covers do have the date received noted by the recipient.  From the information available and the markings and return labels, I believe these covers are presented chronologically and all very likely preceded the covers using the gravure printed Circus Wagon stamps.  I would very much appreciate any information/insights which could help more accurately date these covers. 

 
The first cover is franked with five overall tagged Circus Wagon stamps and a single overall tagged Stagecoach (Krause-Minkus 868z1, Scott 2228a)

 
This example also uses five overall tagged Circus Wagons but this time a single overall tagged Steam Carriage stamp (Scott 2451, Krause-Minkus 943) adds the additional four cents postage.

 
This cover has five untagged Circus Wagon stamps and a single tagged four cent Steam Carriage (Krause-Minkus 943, Scott 2451). 
The earliest known usage (EKU) of an untagged Circus Wagon is November 7, 1991.

 
This final cover is franked with five untagged Circus Wagons and a pair of block tagged Locomotives (Scott 2226, Krause-Minkus 873)
Although difficult to see, the rightmost Circus Wagon has a Plate Number 1.

 
It is interesting to see each of these covers having sender applied bar codes yet none has the Facing Identification Marks (FIMs) usually associated with these non-USPS applied bar codes.

Each of these covers, has at least one stamp which is tagged and can therefore activate the USPS facer/canceling machines.