bought a bunch of coin rolls from the bank today and as I was sifting through dimes this popped out at me a 1944 W dime and it’s not a rosevelt
As stated above the W is the initial of the designer. On Mercury dimes the mint mark would be located on the reverse to the right of ONE of one dime yours does not have a mint mark so therefore it was minted in Philadelphia.
If you have a Red Book..... you will find all the pertinent information listed for every single denomination. If you don't have a Red Book, I strongly advise you to buy the current copy (2020). Chris
Get the $19.95 version. It has the spiral binding covered. https://www.whitman.com/store/Inventory/Browse/Search/keyword/2020?rawSearch=2020 Chris