Hi Maria,
I'll have a guesstimate at around £1200 - £1500.
A lot depends on the condition, the finer points like case condition, dial condition, when it was last serviced etc.
Original bracelet (if it came with one) & box could worth a combined £800 - £1000

Stewart

: Hello,

: I have this Heuer Carrera. It was my father's.
: Is there anyone who could tell me what its value could be?
: Thank you.

: Maria