The timing and circumstances are right for a misplaced JW campaign letter which was part of the governing body's worldwide letter writing to Putin launched on March 20. The post mark on the letter is "2017-03-26" ie March 26. Keep in mind that on March 23 a 'new light' revised instruction sheet was published because the governing body got the address of Putin wrong. They had the country on the address line above the postal code (same as the above letter) instead of below.
Interestingly the letter was sent to the village of Trelleborg.
I wonder what JWs would be saying if it was sent to the village of Trellejah?