missing omega crown and stem , seamaster 120

[AdamVT227]

A friend came to me with his brothers watch - a Seamaster 120m 166.073 and it has been sitting for the last 40 years .
the watch is missing its crown and stem .
the crown i believe to be 42062
I would appreciate help identifying those parts , and if someone can source them it will be amazing .
the photo is not his watch , its mine but its the same model .

 

[AdamVT227]

this is a stem i found on ebay , Is it good ?
https://www.ebay.com/itm/255028261490

this is a crown i found on ebay . Is it good ?
https://www.ebay.co.uk/itm/405043500036

 

[JwRosenthal]

Calling @Archer

 

[flqt-9000]

AdamVT227

this is a stem i found on ebay , Is it good ?
https://www.ebay.com/itm/255028261490

this is a crown i found on ebay . Is it good ?
https://www.ebay.co.uk/itm/405043500036

Both ok in my opinion