Hello, such comprehensive data is difficult to find online. It is only published in the postal journals of some research associations. For example, the "Shanghai Philately" magazine of the Oriental Sealing and Stamp Research Association publishes it in one issue every year. Pictures and information on all postage covers issued throughout last year. In addition, Shanghai's Journal of In-Situ Sealing Research also publishes annual postage seal information. Sponsor: Shanghai Philatelic Association Editor-in-Chief: Shen Lihua Address: No. 18, Sichuan North Road, Shanghai Postal Code: 200085 You can contact the philatelic association to provide information and which issue of the philatelic magazine to purchase.

Accepted with satisfaction, I wish you happy stamp collecting!