Are the postcards of the Forbidden City collectible?

Postcards in the Forbidden City are very collectible. Because the postcards of the Forbidden City were issued under a specific historical background, they have historical and cultural significance. In addition, there are many kinds of postcards in the Forbidden City, and the value of postcards with different formats, themes and authors is also different. Postcards with unique style, well-preserved and widespread circulation are more valuable for collection. However, it should be noted that the collection of postcards needs to pay attention to authenticity and integrity to avoid buying fake and shoddy postcards or missing parts, thus affecting the collection value.