The Scott catalog has a specific listing for U534 die 3 envelopes that are precanceled. Does this mean only die 3 envelopes were precanceled?
Or that because most of Die 3 were precanceled, that precanceled examples of this cover are worth less?
Or is it the supposition that only Die 3 envelopes were precancelled?
Here is a U532 Die
2 3 that is precanceled.

One of the characteristics of the Die 2 cover is that the top and bottom bars of the letter E are longer than the middle bar.
