The regular dies trial piece. These are known struck in copper J290/P348 with only 3 or 4 known and oroide J292/P350 with only 2 or 3 known. These were struck from business strike dies as were most off-metal pieces prior to 1863. The 2 confirmed pieces have different date placement, with the high date above and low date below.
The listing in Judd and Pollock for a reeded edge copper-nickel piece J291/P349 is believed to be a misdescription of J300/P360-P363.
Photo courtesy of PCGS and Ira & Larrry Goldberg's Coins & Collectibles.