Classic Lightweights history of the B17 - https://www.classiclightweights.co.uk/classic_designs/brooks-b17-saddle/
I think I've read somewhere that the round Brooks logo on the side ceased in the early 50s.
A few parts for sale.
Canti brakes - BR M650 - £17 posted in the UK. ##Sold##
Rear derailleur - M650 .£17 posted in the UK. Has a max/total of 28t and is 7 speed. ##Sold##
Brakes ST-M075 (RapidFire+)also included in the sale is the gear & brake cables and outers which still have life IMO.
£26...
Any ideas of value for this mini group -
All in decent working order when fitted.
Cranks - 170 FC MT60 46,36,26 with bolts,dust covers.
Brake levers/Shifters - ST M075 with cables which should have life left in them.
Rear derailleur - M650.
Canti brakes - BR M650 with hangers ,bolts.