A couple do. most don't. Don't worry about it if I think I need better photos I know how to find them and as well the ones that do show are incorrect.. The second link from the end you have as a 1a is clearly marked II right on the tank's front left fender
And this link
https://www.newindianexpress.com/nat...n-2073023.html
Also claims the photo is a 1A but it is also clearly marked as a II...... and it's probably the same tank as the other photo
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Seeing as how convoluted this has become I am going to go out on a limb and say the 1A and the II are the same tank with "1A" being the working prototype name and in reality, what we should have is one unit named Arjun Mk IA/II