Taking the chassis out of the Lafayette yields a nice view of the circuit.
The three tubes are plainly seen; two 12AX7 s, one shielded and one not along with the taller 6BQ5.
The could be the original tubes but are very, very old in any case. They are all marked “Hitachi Japan”.
It’s a fairly clean chassis with a good bit of room between components except the circuit board is a bit crammed.