It works Denes, thanks.

Here is the version needed for my app

 {{cc=[]}}
    {{for x in location_data['postalcodes']:}}
        {{c=x['countryCode']}}
        {{if c not in cc:}}
            {{cc.append(c)}}
  
  {{countryName=db(db.Country.countryCode==c).select(limitby=(0,1)).first()}}
    <h3>{{=A(countryName.countryName, 
_href=URL('default','select_city_from_postal_code', 
vars=dict(vars=request.vars, specificCountryID = countryName.id, 
your_postal_code=your_postal_code)))}}</h3>
        {{pass}}
    {{pass}}

Much appreciated. Sure beats downloading 43,000 postal codes,

Alex

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