I bought all of these piggy banks in central Holland. In itself it means nothing, but it could indicate that they were produced in Gouda and/ or Schoonhoven.
No other indication of origin found.
Two sizes: 15,5 and 13,5 cm. Date: 1950-1960.
The mould of these piggy banks is used in many countries. I know them from Germany, but also from the USA. The shown here purchased in the Netherlands and I suppose they were also made here. Mould number 791 and a four leaf clover right above the tail. Length 13.5 cm. Period 1950 to 1965.