Plate Letters India Rupees

Hello, I bought some Indian Rupees for my collection and then came on here to update my banknote list and had to guess what the plate letter was because I couldn't find any articles on the internet that actually showed a calculation to work them out. If someone could help, I'd be really grateful. :)

Hello 🤖

Without pictures, it will be very difficult for anyone to help you. Could you please post clear pictures of each side of your item?

Please note that this is an automatic message. Feel free to ignore if it is not relevant.

Let's take a look at this one:  N#202321

It's plate letter E.

RunawayShark19

Hello, I bought some Indian Rupees for my collection and then came on here to update my banknote list and had to guess what the plate letter was because I couldn't find any articles on the internet that actually showed a calculation to work them out. If someone could help, I'd be really grateful. :)

There is no calculation to work out for plate letters. There are 4 banknote printing locations in India. Each location has around a half dozen letters that they use as plate letters with the absence of a plate letter being one of the possibilities. It is a highly guarded secret where the printers are located and the plate letters that they use. 

rsirian1

Let's take a look at this one:  N#202321

 

It's plate letter E.

 

Oh my gosh, this is so extremely helpful and I was able to find where to look for my old Indian rupees as well, thank you so very much! You're a gem:)

blue-m

 

There is no calculation to work out for plate letters. There are 4 banknote printing locations in India. Each location has around a half dozen letters that they use as plate letters with the absence of a plate letter being one of the possibilities. It is a highly guarded secret where the printers are located and the plate letters that they use. 

I do not understand. Why is such a secrecy on those letters? For the US$, we all can tell by looking at the letter assigned to each of the 12 Fed Reserves.