the Carolan harp in the NMI is badly damaged and crudely repaired at the base of the soundbox and at the treble end of the neck. Some of the tuning pins are bent. This makes it very hard to understand its original form.
My study of the design, construction, use and damage of the harp
has been published:
Simon Chadwick, ‘Provenance and recording of an eighteenth-century harp’ The Galpin Society Journal LXXIII, March 2020, p.85-110 & 199-201.