Help from someone in DC-very easy

While prepping my dad’s condo for painting, I ran across a postcard that my sister bought for her boyfriend, who she later married. It’s from approximately 20 years ago and she never mailed it. I’m thinking it might be fun to drop it in the mail…with a DC postmark.

If there’s anyone in the DC area that would be willing to drop the postcard in the mail, I’d really appreciate it. I’ll mail it to you (complete with postage of course) and all you have to do is stick it with your outgoing mail. Drop me a PM if you’re interested. TIA.