Widow benefits can
Here we look at a widow whose husband died two years ago. She needs sufficient income but wants to optimize Social Security.
What you need to consider is if the widow be working until full Retirement Age. If not, the choice is to either take the deceased spouse benefit as early as 60.
If the surviving benefit is greater, a better choice would be to start the primary benefit at age 62 and switch to the deceased benefit at Full Retirement Age. There is no advantage to waiting beyond this point as the Survivor benefit does not receive delayed retirement credits and stops increasing at Full Retirement Age.