The Lump

From the Stinchcombe WhatsApp group, an innocuous post:

Whilst digging the small trench for the new planter at the beginning of the Avenue, I struck this lump of metal. It is very heavy metal (not radioactive – at least I hope not…). Trudy is trying to discover what it is, or was. Any guesses? It measures 110 x 80 x 35mm.

So far…

• Early lead weight hand food grinder
• Medieval Shoe horn ?!
• An Iron Man’s lost Tooth
• The remnant of a former Stinchcombe sign? 🤔
• A lump of iron that you heat and put in a smoothing iron…
• Part of a Lorry coupling?

If you know what it is, or have one just like it, please put it in the comments below.