Ron Guth:
The mintage of the 1841-O Half Dime is identical to that of the 1842, but it is considerably rarer than the mintage might suggest and the 1841-O is always priced much higher than the 1842. Uncirculated examples are very scarce, bordering on rare, but there is one at the PCGS MS67+ level, another at PCGS MS67, then a handful of MS64 and MS65 examples.
The overall strike characteristics for this date are normal to above-average for a New Orleans mint product, but on some examples, the dies had remained in place so long that they became clashed, cracked, and the surfaces took on a pebbly appearance (these characteristics can be seen on the MS67+ example pictured above).