Romania 10 Lei 1966 identification

Can someone help me figure out the difference between a Romania 10 Lei 1966 p-94a(1) and a p-94a(2)? It says that the p-94a(1) has a  “narrow serial # prefix” and the p-94a(2) has a “wide serial # prefix”. What does that mean? Can someone picture the 2 side by side so I can determine which one I have. I would assume that I have the one that is the most common (p-94(1), but, I would like to make sure. Thank you.

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.

Try this - P94a1

and this - P94a2

Courtesy of banknote.ws