We have 2 toners for sale for a Brother HL-4200CN. Our printer bust but we had this in the drawer, and are now not needed.
The toner part numbers are:
TN-12 M (Magenta toner)
TN-12 C (Cyan toner)
These toners retail for around £100-£110, so this is a chance to bag yourself a couple of cheap ones. I'm not going to put a price tag on them, as we have no use for them anymore - all I ask is that offers made are sensible.