As to varieties, there are many doubled dies, repunched mint marks, overmintmarks, the 1943/2 overdate, and other oddities for Jefferson nickels. The JN major varieties are fewer than many other denominations, making them easier to collect. A good place to start is the PCGS price guide site. Most nickels with attributable Cherrypicker Guide varieties (which tend to be the most dramatic and valuable) will have a little drop down + where you can see the varieties.
For doubled dies, a quick starter guide on CCF:
https://goccf.com/t/453307
I also highly recommend Brian's Variety Coins, the Wexler catalog, Variety Vista, NGC VarietyPlus, and PCGS for checking out Jefferson nickel varieties.
For doubled dies, a quick starter guide on CCF:
https://goccf.com/t/453307
I also highly recommend Brian's Variety Coins, the Wexler catalog, Variety Vista, NGC VarietyPlus, and PCGS for checking out Jefferson nickel varieties.






















