OK. So George Morgan's initial "M" appears on the Morgan dollar (1878-1921) in the curls of Liberty's hair. Some, not knowing the English engraver who designed the new dollar, took the "M" to stand for "Mint." But how anyone, as reported in the April 4, 1878 issue of the Cincinnati Commercial Tribune, could have figured he hid a "scowling British lion" ... "in the abundant back hair with which [he] has embellished the head of Liberty" is beyond me. The Tribune quipped, 'What else this malevolent artist may have managed to crowd into the design, who dare conjecture?"
I'm not seeing a lion in Liberty's hair--scowling or otherwise.
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