The following 3 cent piece was struck in nickel from regular dies and shows a broader planchet and is slightly heavy 32.4 grains which is why Pollock included it in his pattern book. The piece appears, however, to be a broadstruck mint error. The coin was originally graded NGC64 but was upgraded to PCGS65 when the coin was offered in Heritage 4/21 sale ex Simpson and reslabbed as a mint error. Because of this, the image of the coin under J1260a no longer appears on the pcgs.com/coinfacts website.
Photo courtesy of PCGS.