A Siemens coincidence

Last Wednesday listened with Vicky the Siemens WSW mic preamplifier on youtube. On Thursday while looking for ferite ring cores on Dimoulas shop for input or output transformers, Sylvia gave me the Siemens vintage catalog including ferrites, Mikes Psalidas must had used this on Finos Film console filters as he had show me non ring ferite cores, and Finos studios was a few meters away from Dimoulas shop. On Friday while looking for germanium (high electron mobility) transistors Kostas gave me 2 Siemens hearing aid mic preamps. Same day at Sideris shop a tiny Retex ABOX, palm size with beize brown colors was found as well as some germanium transistors.