The text inside the card, have I translated for you here:
Days come – days go -
as child-minder now 25 years.
A work with a lot of trust and seriousness,
when the parents their child you entrust.
Like child-minder in a hole work life,
may your work have been positive.
When you sometime think backwards,
and have forgotten all about dummies and nappies
and you meet your child on your way,
may a lot of thought, memories wakes and smile on you.