Fonos

Company that sold digitized and restored copies (CDrs) from out of print Dutch LPs and CDs.
Founded in 2003. Discontinued in February 2013.

In January 2017 the Fonos collection of more than 5,000 titles became available through Muziekweb, the music library of The Netherlands.

It seems that catalog nr started with LP are sourced from the original LP and catalog nr started with CD are sourced from the original CD's.

Also there are catalog numbers that started with ST and probably stands for "studio" or "foundation".
The most common interpretation is that "st" refers to recordings that come from public or archives of institutions, such as: Recordings of the Netherlands Music Institute (NMI) Recordings from public broadcasters (e.g. NOS/VARA/KRO) Live recordings, studio recordings, or radio recordings.
Original carrier is often a tape recording or radio tape In many cases, these recordings come from: Analog tape recorders (e.g. 1/4 inch tape) Digital archives of broadcasters Test pressings or internal recordings

For unofficial releases pretending to be on this label, please use Fonos (3)