Vintage Radford Tristar T90 monitors.
They are quite rare speakers on the second hand market, have exceptional build quality and sound reproduction.
The speakers had on owner from new and have got new foam grills recently.
Some information from Radford:
"Tristar T90 uses three drive units: bass, mid-range and treble. The mid-range unit is a closed back type enabling it to operate in the same enclosure as the bass driver. This loudspeaker is intended to satisfy the requirement for a true high fidelity performance with very low colouration in a relatively small dimension.
Frequency range: 55Hz-25kHz
Power handling capacity: 50 watts
Size: 21" x 12" x 9" (53 x 32 x 23cm)
Weight: 33lb (15kg)"