Replacement Crystal for 1957 Rolex 6534 Model

Hoping more experienced members can help. Have recently acquired a 1957 6534 Oyster Perpetual Date with 1035 movement. Crystal is smashed a nd needs replacing. Is it safe to go with a generic replacement or is genuine the way to go. Obviously a big difference in price and can find many options available for generic versions of the 25-117 cyclops crystal needed. Can anyone suggest any better quality generic versions they may have had experience with or are they all the same

Thanks. Have ordered a couple from Cousins in the UK

Great watch! 👍 show us this "crown" after replacement.