I remembered that I wrote down the Super Diode numbers years ago when I used to fiddle with them. These diodes can get pretty wild with slide!
Hope this helps:
MV1620 (for 148GTL and similar)
ECG 610 thru ECG 614
(FYI: ECG was sold to NTE)
Cross references:
MV1620: 1S2147, ECG610, NTE610,
MV1624: 1S1923, 1S1923A, ECG611
MV1628, MV1401, 1S1924, 1S2085A, 1S2088A
MV1634: MV1410A, BA102A, ECG613
MV1638: 1S2197, BA102C, ECG614