Vintage RS 196-072 Valve Amp Power Transformer (250V/500V HT, 6.3V/5V FIL) - A
0 - 5V (2A) - 6.3V (1A) secondary winding, to accomodate both 6.3V rectifier tubes or classic 5V GZ34/5Y3 tubes. - 5V (2A): No-load = 5.43V, 5.06V @ 2.29A. This is Unit A. Electrically it appears to be in top condition.