There at least three different Doubled Dies for the 1941 Lincoln cent. The Type 1 is the most ppopular of the three.
The doubling is mostly noticeable to the north of the word “Liberty.” There is also doubling to the east of the word, “Trust.” The south of the “4” digit on the date also has some less prominent doubling, but yet, it is still visible with the naked eye.
The 1941 Doubled Die Type 1 is not as prominent as the 1955, 1917 or 1936 Type 1 Doubled Dies. However, the 1941 Doubled Die Type 1 has always been highly collected, that many consider it a major variety.
The 1941 Doubled Die Type 1 can be easily obtained by collectors, as there are probably at least 1,000 or so surviving examples in all grades combined.
Three different die varieties are known as the 1941 Doubled Die. All three are of roughly the same value, two look very much alike, and the third is relatively weak but shows a wider spread between the first and second hubbing:
FS-101 (old FS-018) - Fairly strong doubling at LIBERTY, weaker doubling at TRUST, doubling of the 4 of the date, weak doubling at W of WE. The weakness of the first hubbing is especially apparent on TRUST, especially in comparison to the next (FS-102).
FS-102 (old FS-081.1) - Similar to the preceding but with strong doubling at TRUST and the W of WE. Commands a slight premium over the other two varieties listed here.
FS-103 (old FS-018.3) - Faint doubling visible mostly on the 1 and 9 of the date and the TY of LIBERTY. Easily identified by doubling on the earlobe.
Sources and/or recommended reading:
"Cherrypickers' Guide to Rare Die Varieties of United States Coins, Fifth Edition, Volume 1" by Bill Fivaz and J.T. Stanton