How much is a 1928 100 peseta note worth?

The value of a 1928 100 peseta note can vary significantly based on its condition, rarity, and market demand. Generally, in good condition, it may be worth anywhere from $50 to several hundred dollars. Notes in pristine or uncirculated condition could fetch higher prices among collectors. For an accurate valuation, it's best to consult a currency expert or reference a reputable auction site.