Studio Monitors & Speakers
Seeburg Acoustic Line Flying Bracket TSM 10/A4
Seeburg Acoustic Line Flying Bracket TSM 10/A4, Vertical flying hanger, Suitable for TSM 10 / A4
https://www.bizrate.co.uk/musicalinstrumentmonitors_speakers/seeburg-acoustic-line-flying-bracket-oid8184942749.html