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BPH readings

I finally sat and listened to the nice music of the Lemania 1873. It is supposed to be rated at 28800bph. Then I listened to my new to me Cal12 and it was almost identical,nice movement.
Just out of curiosity I picked up my Tiger and listened to the 7750,Wow it sounds like a freight train;-) Does anyone know the rating for the 7750?
I'm setting them all side byside to compare the accuracy after 48hrs.

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