Your bottom coin is a 111.6. The coin in the slab that says 111.6 is incorrect in the designation. One more example of TPG error on Spanish Colonial Coins.
No comment possible on the authenticity of either coin, I cannot tell from pictures and the 1821 Zs is known to have been extensively counterfeited.
No comment possible on the authenticity of either coin, I cannot tell from pictures and the 1821 Zs is known to have been extensively counterfeited.

























