Watch List notes:

Valladolid, Spain, cob 4 reales, 1613/2 H, very rare, NGC AU 53, finest known in NGC census. Cal-unl (Type 158); KM-unl (36.4 for type). 13.69 grams. Nearly full crowned shield (doubled) and cross-lions-castles, the former with full and bold mintmark (four wavy lines) to left above weak but certain assayer H, the latter with most of 3 and curved left edge of 1 of date and faint remains of a Z (2) under the 3, an overdate that is listed for assayer F but not for assayer H (1611-12, which is what NGC calls it), hence probably a muling of a 1612 H obverse with a modified reverse, lightly toned and somewhat weak in places but not overly circulated.
($400-600)