This is strange. I received a card from Russia today, clearly postmarked 19 04 21. I couldn’t register it, and thought the ID number was too old now, starting with RU-80…
I filled in the ‘get help with registering a card’ form, which immediately told me that I had registered this card already.
It turns out that this person sent me a card which arrived and was registered on 7 April after travelling for 200 days. Then, on 19 April, she sent me another one with the same ID number. I found the first card and checked the handwriting and message, and yep, it’s the same person.
The first card is up on her ‘sent’ statistics. So why send me another one 12 days later? (It’s a shame I can’t register the second one, as it’s a nice card.)