Alan

Rigby's used their own pattern cocking piece aperture sights. Fairly common on 98 Mausers, but I could only guess about what might have been on one of their Lee Speeds.

Jack Millar - the Melbourne Gunsmith was making up repros at one stage - he might still have some, but is suffering some ill health at the moment.

If your'e interested in getting hold of one, I could make some enquiries on your behalf??