Ah, got it. The donor car must resided in a LHT country at some point in the past and had the lenses swapped.
LHT (note, LHT is RHD and vice-versa) lenses have opposite fluting on the glass ahead of the H4/main bulb. Details and photos are in
this post.
There's no way to tell from looking at the front of the reflectors, but the label on the back of the reflector will have numbers that indicate LHT vs RHT. Unfortunately I don't have a comprehensive list of those numbers to confirm, but I
think you have RHT reflectors.