Watch List notes:

Argentina, 1 diaguita (400 pesos convertible), 1991, 400th anniversary of the founding of La Rioja. KM-Tn2; Janson-3.2 (p. 498). 24.93 grams. One-year commemorative struck only in low-grade Proof in limited quantities (1000 pieces), fineness 0.750, this specimen with lustrous and problem-free.

Estimate: $1000 - 2000