Check out this link if you haven't already seen. If the answer isn't here, the answer doesn't exist! cc: @Lehigh96 https://www.cointalk.com/threads/variety-1941-s-large-s-jefferson-nickel-fs-501.213511/
Agree. The bottom of the S mintmark is below the bottom of the nearest window, among other diagnostics. Nice find!
The lamination may have caused some distortion to the mint mark. However, given that the bottom of the windows lines up with the middle of the S, I would consider it a Large S. I don't know how long I have had it. I found this and 2 others in my accumulation from the last 70 plus years. Thanks for all the feedback.