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Have other mirrors with the same number type on them, could be differences through chromed painted, changes over the years don't discount them as not the original mirrors just because one set of mine are stamped with Kawasaki some of my others are not

I don't believe they are for an A1. AFAIK they all had black stems and one sure way to tell a pair is that the right mirror has a shorter stem because it mounts higher on the master cylinder.
I spent years trying to source genuine and could never find an after market set that had the short right stem and they looked uneven when seeing the bike front on. I finally found a pair on fleabay about 2 years ago.
One of mine got broken when the stupid bike got drunk when I left it outside a pub and the other was wiped out by a Cockatoo that was a tad slow. Well maybe I was going a little bit too fast if there is such a concept.