Please refer to the scans below and let me knows of what you think later there
That's the back plate number.
Both front and back plate numbers are #1. Kinda cool, but no premium.
These number one as usual which is favourite of my number to be honest with you
since you like number 1...check out my note...the serial contains "1" in it....10000000:
Fantastic surface condition and must be wonderful with solid number one there and believe both sides printing from the number one plate must be extreme rare banknote and fetch high value from my personal opinion and myself not expert but citizen that living in foreign country there