This is really interesting too! Thanks for sharing 
These look great! 
Thank you so much for thinking of sharing in this thread 
Ooh these are great, and I love how they tie this in with celebrating 500 years of postal service. It really shows their ability to evolve with the times. 
Here is a list of Covid-19 stamps that have been issued so far. Additionally there have been personalised stamps and catch-penny issues from Stamperija and such, those are excluded. So if anyone wants to collect them all there are many to find. 
Iran (17th March)
Vietnam (31st March)
Switzerland (6th April)
Central African Republic (27th April)
Guinea Bissau (27th April)
Isle of Man (4th May)
Morocco (7th May)
United Arab Emirates (10th May)
China (11th May)
Uruguay (13th May)
New Zealand (20th May)
Ukraine (29th May)
Monaco (3rd June)
Sao Tome and Principe (8th June)
Bosnia and Herzegovina - BH Posta (9th June)
Niger (10th June)
Djibouti (12th June)
Curacao (18th June)
Oman (22nd June)
Czech Republic (24th June)
Macau (24th June)
Tajikistan (June)
Lebanon (1st July)
Brazil (10th July)
Philippines (13th July)
Senegal (20th June)
South Sudan (21st July)
Taiwan (21st July)
Saudi Arabia (27th July)
French Polynesia (31st July)
Singapore - Quirks in the Island City (7th August)
Greenland (10th August)
United Nations (10th August)
Kosovo (14th August)
Thailand (14th August)
Indonesia (17th August)
Alderney (19th August)
Guernsey (19th August)
Slovakia (21st August)
Colombia (26th August)
Singapore - Soaper 5 (4th September)
France (11th September)
Bosnia and Herzegovina - Republika Srpska (21st September)
Serbia (30th September)
Australia (1st October)
Spain (1st October)
Kyrgyzstan (2nd October)
Portugal (9th October)
Saudi Arabia (9th October)
Sri Lanka (9th October)
Egypt (20th October)
Bahamas (22nd October)
Austria (30th October)
Russia (30th October)
Mexico (3rd November)
Wallis and Futuna (5th November)
San Marino (10th November)
Mexico (11th November)
North Cyprus (19th November)
Mali (1st December)
Transnistria (11th December)
Malaysia (16th December)
Hong Kong (29th December)
Kyrgyz Express Post (December)
Syria (issued in 2020)
India (later in 2020)
Tunisia (later in 2020?)
Wow that is a really comprehensive list! Thank you! 
These look great!
Wow 
Wow, didn’t know there are matching sets too! Thanks for sharing
Ooh these look interesting! 
Switzerland issued the following stamp with a big surplus for donation.
I still have them available and i am open for 1to1 exchanges with the issues of your country 
I just received the Austrian Covid stamp sheet today. Would LOVE the actual stamp on postcard, but it’s not cheap.
