MEXICO. "Hookneck" 8 Escudos from 1823-Mo JM Mexico City Mint were a 1 year type variety with cap pointed to the A in LIBERTAD (a Type I) or the T (a Type II).  These are both SCARCE and popular, and represent the first gold coin of the newly founded Republic. The iconic imagery is instantly recognizable elevating its desirability and interest across generations of collectors. 

These coins with this seal are known in Mexico as: "Águila de perfil" : "Profile eagle" but in the world collector's community refer to them predominately as "Hook-neck snake" due to the coil the snake has near the eagle's beak.

The quality of the strikes of Type I coins is almost always superior to that of the Type II; Details of the eagle feathers, cactus and lettering on the open book are better on most Type I coins but the Type II coins are scarcer (Type I coins outnumber Type II coins by about two to one)

KM#382.1 refers to the coins where the Cap points to "A" of "LIBERTAD" - Simple snake tail and the KM#382.2 refers to the coins where the Cap points to "T" of "LIBERTAD" - Looping snake tail.