Uppercase or lowercase cyrillicletters? [gelöst]

I have identified this banknote as N#207828 , and from a quick search I think the variant is BIG, BIG? Is that correct?

You have “BIG, BIG”.

The “BIG” letter is bigger than digits of the serial number.

The “small” letter is slightly less than digits of the serial number.

These year line comments are not really helpful. Either an example with a comparison should be put in the comment section or real measurements.

I always thought the BIG BIG referred to serial numbers being BIG or small.  The note imaged shows the upper prefix and serial are BIG.  While the lower is small.  So wouldn't this one be BIG small? And not BIG BIG?  I think Viet Name has some like this as well.

Oklahoman

I always thought the BIG BIG referred to serial numbers being BIG or small.  The note imaged shows the upper prefix and serial are BIG.  While the lower is small.  So wouldn't this one be BIG small? And not BIG BIG?  I think Viet Name has some like this as well.

This?

If so, is the one on the banknote page BIG, BIG or small, small?

Modern classification of 1 rouble banknotes from 1947 (proposed by Vladimir Zasko in his book and de facto accepted by collectors in the countries of the former USSR).

in chronological order:

I Type - 16 scrolls in the coat of arms, 15 languages ​​in the cartouche (plus Russian)

• Sharp serial letters font; combination of letters is uppercase-uppercase; without gap between letters (AA)
• Sharp serial letters font; combination of letters is uppercase-lowercase; without gap between letters (Aa)
• Sharp serial letters font; combination of letters is lowercase-uppercase; without gap between letters (aA)
• Sharp serial letters font; combination of letters is lowercase-lowercase; without gap between letters (aa)
• Round serial letters font; combination of letters is uppercase-uppercase (AA)
• Round serial letters font; combination of letters is uppercase-lowercase (Aa)
• Round serial letters font; combination of letters is lowercase-uppercase (aA)
• Round serial letters font; combination of letters is lowercase-lowercase (aa)
• Sharp serial letters font; combination of letters is uppercase-uppercase; with gap between letters (A A)
• Sharp serial letters font; combination of letters is uppercase-lowercase; with gap between letters (A a)
• Sharp serial letters font; combination of letters is lowercase-uppercase; with gap between letters (a A)

II Type - 15 scrolls in the coat of arms, 14 languages ​​in the cartouche (plus Russian) - 1957 issue

• Sharp serial letters font; combination of letters is uppercase-uppercase; without gap between letters (AA)
• Sharp serial letters font; combination of letters is uppercase-lowercase (Aa)
• Sharp serial letters font; combination of letters is lowercase-uppercase (aA)
• Sharp serial letters font; combination of letters is lowercase-lowercase (aa)
• Sharp serial letters font; combination of letters is uppercase-uppercase; with gap between letters (A A)

Also I type has two variants of specimen, II type has 1 variant of specimen and 3 variants of replacement notes