Whether or not a coin is valuable depends on the coin’s condition, the rarity of the issue, and the market demand. Often, 45 degrees or more rotated die errors are where significant value gains are seen in numismatics.
Are the Weimar Republic Rotated Die Error Coins Rare?
The Weimar Republic rotated die error coins in the right condition can be rare.
Your 1925 J 1 Reichsmark came from the Hamburg Mint, which has used a J stamp since 1875. The 1925 1 Reichsmark Hamburg issue had a mintage of 6,880,000.
Should I sell My Weimar Republic Rotated Die Error Coin?
There are a handful of online marketplaces where Weimar Republic error coins can be found. Some selling prices are low, but coins in superb condition may sell for hundreds of dollars.
Some auction houses may help you earn more for it if you decide to sell, but how valuable is a rotated die error from 1925 to you? The drive that compels us to collect is the love of collecting historical artifacts and holding history in our hands.
NGC (Numismatic Guaranty Corporation) grades older coins, 1600-date, and PCGS should also be able to grade it with accuracy.
If your 1925 J 1 Reichsmark coin is in exquisite condition, it could be valuable to the right buyer. If you plan on selling, getting it graded first is important.