It looks like Entergy Arkansas (a division of Entergy-ETR) is redeeming all of their old perpetual preferreds. These issues were originally sold back in the 1960’s and are all $100 issues.
These issues all have coupons between 4.32% and 4.72%. This seems a little unusual that they would redeem these low coupon issues, but they are small issues and likely the paperwork is more trouble than it is worth.
The company is selling 1st Mortgage Bonds ($1000 bonds) to do the redemption.
The prospectus showing the “use of proceeds” can be found here.