Here it is, 37 years after the GE overprinted cards made their mark on history, and we still
have private revaluation overprints.
They seem to turn up when the postcard rate changes.
Nowadays, this type of revaluation is valid under the permit/meter postal regulations. Postal Service Form 3600-PC is employed to identify the number of pieces being revalued and the reason for the revaluation. A weighing and dispatch certificate must accompany this form for the permit application.
From a glance at copies of these documents for this card, it is seen that this company revalued a total of 200 pieces. That would equal five full uncut postal card sheets (of 40 cards each).
The card has a nice barcode spray cancellation with a date of 2/10/1995, making this usage consistent with the brand new 20 cent postcard rate.
Here is the reverse side of the card.
For contemporary commercial enterprises seeking to
privately revalue their postal cards, perhaps the circumstances are similar to those of GE.
They have large quantities of cards (in full sheets) of the obsolete denomination, and choose to have them revalued as
part of a pre-printing job for advertising material, or in this case, to announce a change of address
to their customers.