Spain
Alfonso XIII white metal Fantasy Proof Pattern 20 Centimos 1896-L MS62 NGC, KMX-12b, BDM-Vol. II p.582. The mintage is 50 pieces by John Pinches for Reginald Huth. The contrast between the fields and the devices is spectacular for the issue. In addition the eye-appeal is gorgeous to say the least.
Estimate: 550-750 USD