1970s bathtap washer problem

[kriswales]

i am trying to change the washer in a 1970 bath tap that's dripping i cannot find any screw that holds the tap spindle on there is no screw in the side and nothing apparent under the blue plastic indicator any ideas please

 

[Ric2013]

Could it simply be shoved on? Even the old ones with the screw on the side are typically so tight you need to use the tap thread and a spanner (ideally a couple of blocks of hardwood but no one will pay you for the time to rig all that up) around the spindle to jack the head off.