gorbas, pmfji.
Schneider sold taking lenses in barrel. Likely applications were cameras with focal plane shutters. Not Schneider, but if you look for them on ebay.de you should find longish post-WW II Tessars in barrel that were made to go on Mentor cameras, which have behind the lens shutters.
Lenses in barrel often trip up buyers and sellers on eBay. I got my 135/5.6 Symmar (convertible, also known as jes' plain Symmar) in barrel from an eBay seller who offered it as an enlarging lens for $32 delivered. Its cells are now in shutter and I still have the barrel.
Schneider has always made a very sharp distinction between their enlarging lenses (Componar, a triplet; Comparon, a tessar; Componon, all plasmats) and the corresponding taking lenses (Radionar, Xenar, plasmat type Symmar).