I am not sure of the date of this sale without doing further research,
but we can generally assume that today the work has increased considerably
in price and would be very much more expensive should it be sold now.
Unfortunately, felt tip pen is always susceptible to losing its colour and fading.
These days the work can be protected with museum glass.
Assuming the damage has not already been done.
This drawing is one of Lowry's lat works, aS we can see from the style of the hair and clothes, reminiscent of the 1960s to 1970s.