1N4148 at 7mA would be more like -2.3mA per deg C so 3 x 1n4148 looks
suitable

No other datecodes found, so presumably ELNA QEY 6303 is a type number for
6800uF 63V electros.
Light grey cement/epoxy? cased resistors are more 70s than 60s
Some strange-to-me 2SC960 bolt-downable (but not here, like the varistors)
packages , different to my 1977 databook listing, but all types in here are
Si not 60s Ge