Hi Here is my 1928 Primus Sport stove with a bicycle clamp attached. I noticed the lipstick vapouriser base is different to my other 96’s. The pump can be locked in place on which looks like a retro fitted thread on the pump cap and knob. The case has Primus 96 Sport on the lid of the case which my later model does not. The tray has an extra set of cut outs in the top left hand corner but the burner bell does not fit these.