Hello everyone. I was recently gifted this Heuer ref 844 from a friend of mine. He bought it new in 1981 from a popular sports retailer. He gave it to me but I feel bad not compensating him at least partially. I tried finding more examples online but I could only find the Quartz models. Based on the Mercedes hand, this appears to be the second version of this watch as far as I know but I have no idea on the value. Any idea? Also, any idea where I can source an original bracelet for this watch? Thank you.