It's the B1, not B1 XL. They have a little adhesive strip you put inside to make it work for smaller eye piece, mine currently has that installed but can be removed. It's a couple years old, so I guess first generation? I didn't know they had a new one.
Would need to buy the plate from magview, I can put mine in a bag to come with it and would probably stick fine but it’s used. $60 TYD
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