Forks added pic below.
White poweder coated fork with 1" threaded steerer.
Steerer is 135mm long from bottom of lower headset race to top of thread.
19mm of thread.
About 113mm from bottom of lower headset race to bottom of top headset race (but I reckon a 100mm headtube on the frame would in the right ball park for this to fit).
Very good condition on fork legs. Light rust spotting on steerer only. £15