2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/120503In this note we show that $+1$-contact surgery on distinct Legendrian knots frequently produces contactomorphic manifolds. We also give examples where this happens for $-1$-contact surgery. As an amusing corollary we find overtwisted contact structures that contain a large number of distinct Legendrian knots with the same classical invariants and tight complements.8 pages, 2 figuresSymplectic GeometryGeometric Topologytext