Reuse an old postcard

[Feuerstuhl]

Here is a discussion about whether to cover the back (private information!) or not which might be interesting for you:

Question about sending used cards

I recently bought some used vintage cards at an old store along the coast. I’m probably going to give it away for swap. But I need to know, should I cover the original address for privacy or is ok uncovered seeing as it’s going in an envelope?