1917 R-letter “Taken from collection box”, Гайнаш/Ainaži/Heinaste – Weissenstein/Paide

Nice R-letter from Гайнаш/Ainaži (H/O 39 pg 463), now belonging to Latvia. On the back there is note “Taken from collection box”, meaning the letter was not handed over in post office, but was left in collection box. As it had marking “Zakaznoye” and was properly franked, the letter was prepared as registered letter, but the sender did not get receipt. Weissenstein arrival postmark is quite scarce (littera b). Note Russian stamps with overprint.