Harness fitting, bridle, cheekpiece

Two incomplete Iron Age studded bronze harness fittings; they are most likely cheek pieces from the same bridle. The first one found is broken across the perforation. The perforation has an internal curve indicating it may have accommodated a ring rather than a stud. A small hole intruding on the upper face of the perforation suggests the harness fitting was probably miscast. The curved bar of the harness fitting divides decoratively to meet two knobs, which are spiked on the underside; there is also a knobbed spike at the junction of the bar with the fitting hoop.
The second cheekpiece to be found is an exact match to the first but there are some differences to the perforation end. The perforation end has the central hole similar to the first cheekpiece, but it also has a transverse slot. There is part of an iron fitting still present that is secured by an iron pin that passes through the iron fitting and the central hole of the perforation end. This iron fitting is broken but the surviving ends seem to be curving as if forming a loop that is set at 90 degrees to the loop that sits within the transverse slot and is attached by the pin.
Two objects with very similar studs are illustrated in Jope (2000: pl 271d-f and g), one is from Dragonby, Lincolnshire (see also May 1996: p.278 no.83, fig 11.26) and is described as a strap-mount, the other is from Rainsborough Camp, Northants. Jope states that it is unclear if these mounts were used on horse harness, or on human equipment.
Jope, E. M. 2000. Early Celtic Art in the British Isles. Clarendon Press, Oxford.
May, J. 1996. Dragonby. Oxbow Monograph, Oxford.
Ian Stead (Iron Age artefact specialist) said that he agrees "it looks Iron Age and the 'bubble/miscast' is typical of IA bronzes. Curious that it has projections on the inside of the curve." He suggests it might be a miscast mirror handle, but the spikes are inconsistent with other known mirror handles.
Julia Farley notes that two Iron Age fittings with similar (although more pronounced) 'spikes' on the underside are recorded on the PAS database:
LANCUM-DC3370: https://finds.org.uk/database/artefacts/record/id/589843
DENO-B67153: https://finds.org.uk/database/artefacts/record/id/269951
As is a piece with a similar curve to the form, noted as a harness or possible armour fitting:
SUR-416D65: https://finds.org.uk/database/artefacts/record/id/428924