DIY Numismatist: Coin Degree Finder

Great link. Thanks. I doubt I'll ever need one, but I'll certainly have one, just in case, before the end of the week!

Looks like it works. However, not sure what the purpose actually is for. In many instances if the coin has a rotated reverse of any substancial amount it is usually apparent. If you put any coins in an album where both sides are visable, and the obverse is straight up and you turn the page you would see any rotated reverses immedeatelly. If you put a coin in a 2x2 or equal, again if the obverse is straight up and you turn it over, any rotation is obvious. If any coin is rotated only a few degrees it is acceptable anyway so again, what is the purpose of building this and checking every coin?
Note: Rotated reverses are seldom mentioned in books as a Mint error. Example is the Red Book, pages 390 to 394. No mention of rotated reverses on coins. Not usual for even an ebay item. Never saw mentions of these at coin shows.

G'day, rotations are a popular variety of coin. The 2001 Australian dollar displays a lot of variation, and some collectors have sets of twelve - one for each hour of the clock-face [zifferblatt in German: I learned that a few days ago, and have been looking for an opportunity to share it]. Some collectors are now working on a second set of twelve, at 30-minute intervals (15 degrees and multiples thereof).

now the point of this tool is: before you put a coin into 2x2, etc, you can check it, to see if it is a vaiation worth keeping.

thankyou Chill,

Peter in Oz
during a pause in the rain