Three Volumes of Sefer Tzela"ch, Prague - First Editions

Three books, first editions of Sefer Tzela"ch [Tziyun Lenefesh Chaya], commentary on the Talmud, by R. Yechezkel Landau, rabbi of Prague, author of the "Noda B'Yehuda".
* Tzela"ch on Tractate Pesachim. Prague, 1784. First edition, first volume. Published during the lifetime of the author.
[2], 123, [1] leaves. 34.5 cm. Good condition. Small tears to the first pages. Old non-original binding. Many signatures on the title page: "Yitzchak Isaac ben R. Daniel Katz…"; "The small Yosef Guggenheim", "Naftali Goldshmidt".
* Tzela"ch on Tractate Berachot. Prague, 1791. First edition, second volume. Printed during the lifetime of the author.
[3], 82 leaves. 34.5 cm. Good condition. Original binding; worn. Signature on the title page: "G-d protects all who sign here [a play on the Hebrew "G-d protects all those who believe in Him"]… Isaac Mayence".
* Tzela"ch on Tractate Beitza. Prague, 1799. First edition, third volume. Printed after the author's death.
[2] 65 leaves. 34.5 cm. Fair condition. Wear and stains. Worming. New binding. Many notations on the endpaper. Censor's signature on the title page.