This dime struck in proof is an anomaly. Struck from a die with no drapery, a style that was discontinued in 1840, but having the figure of Liberty as on the with drapery design. It is unclear if it has any relation to the 1840 white metal splasher, JA1840-2/P3070, which had the drapery removed by hand. These could be experimental or simply pieces struck from a rejected die.
Only 2 examples are known as follows:
1) Col Green, B.G. Johnson (offered in various invoices 1940 to 1947, Eric Newman-EPNNES, Heritage 11/13, Heritage 5/15 - NGC67, illustrated above
2) Boyd, NN 57th, Kagin 11/73, Heritage 7/93, Heritage 10/01 - NGCAU53
Photo courtesy of Heritage.