Sor’s Six valses op. 39 for two guitars were first published in Paris in 1829-30. Only op. 39 no. 2 is originally by Sor; the other five are arranged by Sor from waltzes by Mohor, Mohor, Steibelt, Mozart, and Mohor respectively.
You can hear op. 39 no. 2, the splendid waltz which is by Sor, played here by Claudio Maccari and Paolo Pugliese.
This edition comes from the new 2019 second edition of Sor’s New Complete Works for Guitar edited by Brian Jeffery. The Introduction and Index to the entire series can be seen here on this site.