Hi Al I am sorry for your loss as well as everyone here. I watched a show on EWTN with Johnette Benkovic and two other widows, they had a week long series on widowhood and she said that the earthly marriage was over and to take it off within a couple of months. I wore mine til I saw the show. Father Sylvia was also on and he said he recommends the same thing. I often visit our rings and miss wearing it. I used to wear both after my husband died. So I suppose it is whatever makes someone comfortable. Grief is a thing of time...different things happen at different times. In your own time.
It can be a totally different situation with women, however. While they may not feel maudlin without their wedding ring, they might want to keep it on in the interest of self-preservation. Once a woman begins to socialize again, she stands a chance of being "hit on". Some women wear wedding rings to avoid that (although that hasn't always prevented unwanted attention either).
This subject was brought up a few days ago. I hadn't checked for more recent posts, but maybe there are more ideas in that thread.