Newly added stamps, issued more then 3 months ago, will be listed only in the corresponding year section.
Stamp issues of countries have appointed an agency for their stamp issues which releases a massive flood of topical blocks with high denominations and themes which, in most cases, have no connection with the issuing countries will be listed only in the corresponding year section. Most of all this stamps, issued by agencies and offered from the dealers as official postage stamps, are not registered by the UPU up till now. The Philatelic Bulletins of UPU of the last years, you can download from the UPU website (link
The WNS register
of the UPU is the only system that provides collectors with a guarantee that a stamp is official.