Welcome to Quilting Board. There is also a Frister & Rossman manual web pages at
http://needlebar.org/main/manuals/fandr/index.html and
http://needlebar.org/main/manuals/fandr/index2.html
I did an image search at
this link and found a couple more similar machines
https://www.naehmaschinenverzeichnis...biesolt-locke/ and
https://www.naehmaschinenverzeichnis...inen/gritzner/
There are some threads here on Quilting Board about restoring and cleaning machines.
Cleaning and repairing the shellac clear coat on vintage sewing mcahines
Cleaning and repairing the Shellac clear coat on Vintage sewing machine heads
How to Clean Up and use a vintage sewing machine - videos by Muv and Fav
That is an unusual badge which I've never seen. Some of the badges will have something to help identify. However, some of the distributors put their own badge on.
Janey - Neat people never make the exciting discoveries I do.
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