Hand-painted envelope means that the pattern drawn in the lower left corner of the envelope echoes the content style of the stamp pattern posted in the upper right corner of the envelope. The picture is not printed, but drawn by the designer of this stamp, with the designer's signature and seal on it. -This is the original hand-painted seal in the true sense.

The pattern area painted on the hand-painted seal is not large, which is about 4 to 6 times that of the seal.

Designers can draw something on the envelope that can't be drawn in stamps, which can be said to be a re-creation of the original stamps drawn by stamp designers, and can also be said to be a supplement to the connotation of stamps. Therefore, collecting hand-painted seals is an important evidence for learning stamp design and designers.

Hand-painted seals are left by designers for themselves or given to friends. So the quantity is very small and it is difficult to collect.

Hand-painted seals have truly become commodities and entered the circulation field. The initiator is the hand-painted seal of "Snow Leopard" by stamp designer Xu Yanbo.

1On July 20th, 990, the first day cover of Snow Leopard issued by the head office was not drawn by the stamp designer according to the usual practice, so Xu Yanbo received many letters from postal fans, so he was unique. He first drew sketches with pen lines, then copied them with a copier, and then signed them one by one by hand according to these semi-finished products, and gave his "invention" a name called "manual seal"