Hey all you iron age fiends,
now, I'm sure this is something well worth getting excited about. A friend of mine has just been in to the National Museum to view a recent find from Co. Meath.
It consists of a metalworkers hoard, and is a cache of tools and part made artifacts. it dates to the early Iron Age, but has some Y-Shaped pieces which likely bear La Tene art, so I'd say you're looking at post 300 BC. The iron is in a fairly corroded state, but so far several shaft-hole hammers, files and a small anvil have been identified. It is hoped that Xray will reveal more details beneath the corrosion. Also, conservators are going to test the teeth of the files, to see what they were working on.
My friend saw Y-shaped bits in various stages of production, and that several ingots and suchlike were found, which might be part of a lost wax casting process.
If I get photos, and if I'm allowed to post them, you'll be seeing more.