Blazon: Per fess vert a castle triple-towered argent windowed gules on each exterior tower an eagle combatant, wings addorsed and inverted sable, armed of the third and gules a lake barry wavy argent and azure
Blazon: Per pale I per fess argent a cross of Santiago gules and sable a walnut tree eradicated argent, II gules a castle triple-towered or windowed azure on a mount in base proper, in chief a molet of eight points argent
Blazon: Per bend gules an ancient balance* argent and of the last a bunch of grapes slipped and leaved proper, in chief an ear of wheat slipped and leaved vert; all within a bordure gules, charged with a castle triple-towered or windowed azure in the dexter chief and sinister, a lion rampant in the sinister chief and dexter, and a fleur-de-lis in base of the fourth
*The blazon in the source from 1991 specifies that the charge in the first section of the shield is a molet of eight points argent, but the depiction shown here is also used on the municipality’s website. This suggests that either the source cited is inaccurate or the blazon has changed since 1991, but I have no further information. The charge appears to be a balance; the top hook would have been held steady, while the object being weighed would be hung on the other hook, and the weight moved along the scaled bar until the two weights balanced.
Blazon: Per quarterly I argent a cross of Santiago gules, II and III gules a castle triple-towered or windowed azure (Castile), IV argent a lion rampant purpre crowned and armed or, langued gules (León)