![EDSROOM-16095 Austria B146-B151 MNH 1936 Complete Inventors CV$47.50 | Europe - Austria, Semi-Postal Stamp / HipStamp EDSROOM-16095 Austria B146-B151 MNH 1936 Complete Inventors CV$47.50 | Europe - Austria, Semi-Postal Stamp / HipStamp](https://storage.googleapis.com/hipstamp/p/842338320ef09833607d58c9e3618606-800.jpg)
EDSROOM-16095 Austria B146-B151 MNH 1936 Complete Inventors CV$47.50 | Europe - Austria, Semi-Postal Stamp / HipStamp
Klavierhaus Alexander Langer GmbH - Patent Schrauben Stimmung - historic patent screw tuning. Very interesting system before 1890 - seen on the music fair exhibition in Ried ag Austria #historic #old #piano #
![Gewindeschraube, Tellerkopf, Kombi-Kreuzschlitz M4, Kopf-Durchmesser 10 mm - im Häfele Österreich Shop Gewindeschraube, Tellerkopf, Kombi-Kreuzschlitz M4, Kopf-Durchmesser 10 mm - im Häfele Österreich Shop](https://www.haefele.at/INTERSHOP/static/WFS/Haefele-HAU-Site/-/Haefele/de_AT/pim/images/default/ppic-00638484.jpg)