Draco (dragon)? Anthropomorphic Roman brooch from a collection from the Celtiberian region

An ancient brooch, known as a fibula, from a collection of Celtiberian items (see more info below). Of note, this brooch resembles draco. This anthropomorphic brooch style was common to Roman clothing, but it was often a dolphin depicted; this examples seems to have ears, and the scales/shape are more reminiscent of draco, Rome's dragon. The brooch is missing the pin and catch system and is broken.

On the rear board of the dust cover for the 1987 printing of Jewelry, 7000 years by Hugh Tait, there is a bracelet with a very similar face. Page 76 states that this bracelet was found in Cordoba, Spain and dates from c. 100 BC; this date and place fits with the context of our piece as well.

This brooch is from a Celtiberian collection of bronze artifacts, it is made of bronze and it measures approximately 45 x 15 x 12 mm.

Provenance -

We bought a collection of artifacts at auction in Switzerland (La Galerie Numismatique, September 28th, 2024); we are researching each object and offering them for sale individually. You can see the collection in the pictures we posted.

In the course of our investigation, we found that the artifacts had names of places in the Celtiberian region written on them, for example "Salienca". Also, the larger brooch design was unique to the Celtiberians (Google search "Celtiberian Fibula" to see similar examples). We've come to the conclusion that the collection is specific to the Celtiberian era/region.

Wikipedia tells us the Celtiberians "were a group of Celts and Celticized peoples inhabiting an area in the central-northeastern Iberian Peninsula during the final centuries of the BC. They were explicitly mentioned as being Celts by several classic authors (e.g. Strabo)."

Condition -
See pictures. Broken. Missing pin/catch system. Tarnished to green. It is cracked, where the bow meets the catch base. Some traces of glue where it was glued into the collection.