Longacre Doubling On A Trade?

From the Numissociety site it goes into more detail "The first design that Longacre provided was the Flying Eagle cent of 1856 to 1858. Although the design was very short lived, today it is extremely popular with collectors (this design is important, as we will see later). Among other designs that Longacre produced for circulating coinage were the Liberty Head used on the gold $1 (1849 to1854) and $20 Liberty Head (1849 to 1907), the Indian Princess gold $1 and $3 of 1854 to 1889, the shield design on the Two Cent Piece (1864 to 1873); the Shield nickel (1866-1883); the silver Three Cent piece (1851-1873); the nickel Three Cent piece (1865-1889) and, perhaps most importantly, the Indian Head cent ((1859 to 1909). " Hope this helps

Longacre doubling is NOT Strike Doubling, the doubled image is actually part of the die.



This is incorrect, the first Longacre designs were the 1849 gold dollar and double eagle. The gold dollars do come with Longacre doubling.

I don't believe it was intended to improve metal flow, it was intended to be a visual aid to determine when design elements had been driven deep enough into the die. When the outlines began appearing around the devices and lettering it was sunk deep enough. The traces of the outlines should have been polished off the dies during their preparation. Once they disappear the depth of the features into the die would be perfect. Due to rushed work in the die shop the outlines were not always polished away. That is why they appear on some dies, and in various stages of removal and not at all on others. One thing you have to remember is that Longacre was not a die sinker, he was a flat plate engraver and that he got his posting not by merit but by political influence.

Longacre doubling can be found on every coin that Longacre designed, and on every design that was modified during his tenure. It isn't seen on coins before his tenure, on coins from during his tenure before they were modified, or on designs modified after his death (both of his design or on designs modified during his tenure)

Same here, for sure!