Looking for a bracelet for a Omega Speedmaster Mark II from the early 70s

i have a 1153/138 that is to short so parts for it might also be ok

it needs to fit 19-20cm arm

Thank you

 

What about an 1171 with straight ends?
Ends are 20mm btw

 

1162/173 is correct for the 70's MKII - there's a plethora available on the 'bay at around the £300 mark.