Glorious Crowns of People

Perhaps you have heard of the "soul-winners" crown, I don't think Paul is referring to a literal crown in this passage. But what then is he referring to in 1 Thessalonians 2:19–20?

For what is our hope, or joy, or crown of rejoicing? Are not even ye in the presence of our Lord Jesus Christ at his coming? For ye are our glory and joy.