Hang on a sec - are you sure you don't have the old Coil pike?
Easy way to tell - is the steerer tapered?
It's certainly oldish. I don't think the steerer is tapered.
If it is coil sprung that would explain the lack of somewhere to squirt air into...
It would also explain how it has height adjustment.
Hang on, I'll google it.
@Hefty started
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Hang on a sec - are you sure you don't have the old Coil pike?
Easy way to tell - is the steerer tapered?