Ancient Celtiberian (Celtic) or Roman vessel (inkpot?, lampholder?) , likely from the Iberian Peninsula; from old collection of bronze items

Unique small bronze vessel from a Celtiberian collection of items; I've spent many hours (and reverse image searches) trying to find a matching example and came up lacking (if you know of one, please do alert me). The top edge is decorated with two sets of parallel lines and the hole continues through the entire object. It seems likely that the bottom hole was plugged and it was used to hold something like ink, or a lampstick (incense, etc). It's possible that the object was used as a spindle whorl or fishing weight, or something else where a string went through, but it seems unlikely as those objects were not typically this well designed or decorated.

The vessel is from a Celtiberian collection of artifacts. It is made of bronze. It measures approximately 25.6 mm high and 23.9 mm across its widest part.

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)."

Provenance -
Someone wrote, what appears to say "ARCE M." on the bottom. This likely coincides with the Arce in the Cantabria region of Spain.

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 entire collection in the pictures we posted.

In the course of our investigation, we found that the artifacts had several names of places in the Celtiberian region written on them, for example "Salienca". Also, the collection's 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.

Condition -

The bronze has a patina of green. There is a cut line near the edge of the top. There are still a few deposits of dirt/tarnish around the sides, as well as one or two scrapes revealing bronze color. Bottom edge has traces of glue from where it was glued into the collection. Bottom hole is plugged, unknown if that is ancient or modern but my gut feel is that it's just glue remnant from when it was put into the collection.