Hi, and welcome to collectors corner . Am familiar with the Series 70 Mod.79 Milbro Diana, but to be honest, the Gecado Model 35 of which you speak is not known to me. See if you can post/host a couple of photos of each on this thread and am sure that I along with one of our German Gurus (Garvin and I.J. et al) will be able to help . Atb: Gareth W-B.