Would you rip? Unfortunately we don't know if its Series 1 or 2. This is key because depending upon the series, it could be high or low numbered cards where the high numbered contains the Mantle and Jackie.

My sense is its worth more sealed because the enterprise value of it, the potential, is worth more than the risk of opening it and it being a series 1 pack.

I've always loved the mental games one goes through on vintage sealed packs or boxes and the price of it and the implied potential value.

https://www.beckett.com/news/1952-topps-baseball-pack-tops-60000/