That's a rim bump/bruise, and what you think might be die cracks are just from the die slowly deteriorating as it strikes coins. "worn/overused die" - that's what most 1914-D $2.5 Indians look like.....
Be careful, those are a highly counterfeited series. ==> https://www.ngccoin.in/resources/counterfeit-detection/top/united-states/ your example appears to have the spurious tool marks above the 4 as outlined here ==> https://www.ngccoin.in/resources/counterfeit-detection/top/united-states/23/