Dear Daniel LeBowsky,
Thank you so much for your incredibly detailed and professional guidance. Your expertise in identifying the specifics of my banknote, especially clarifying the difference between the full serial and block numbers, has been invaluable. The insight you provided regarding the block number, signature combination, and issuance under the Provisional Government has greatly enhanced my understanding.
I truly appreciate the reference you shared for future guidance, and I am grateful for your time and knowledge. It is a pleasure to interact with someone with such profound expertise in Soviet Union banknotes.
Warm regards,
[Rabah]