https://www.donberg.ie/descript/h/hr_6311.htm
Line Output Transformer / Flyback: HR6311 (HR 6311) - 8667210311 BLAUPUNKT SIEMENS LINE OUTPUT...
hr 6311, 8667210311 blaupunkt siemens line output transformer (lopt)/ flyback fc681 750025
line outputtransformerflybackhrblaupunkt