"Further to this here in England we have many beautiful old churches the one at Kentisbury, Devon was built by one of William the conquerors nephews over 900years ago and it has several original lead gargoyles which show very similar oxidised patinas…"
"Yes, you can heat lead to rapidly force the create of lead oxide and under normal conditions lead does not react with water. However, when lead comes in contact with moisture in the air reactivity with water increases. Thin layers of lead oxide…"
"I quote Wikipedia:
Pure lead has a bright silvery appearance with a hint of blue. It tarnishes on contact with moist air, and takes on a dull appearance the hue of which depends on the prevailing conditions. Characteristic properties of…"
"Lead does oxidise, it is well documented, oxidisation is a form of corrosion, tarnish is a result of corrosion, therefore lead does tarnish.
It is not so much the touching of lead which leads to lead poisoning, it is touching lead which has…"
"Try making a small knife cut on back, deep enough to penetrate the brown stain. The cut should be silver colored. Lead doesn't oxidize or tarnish. It is very malleable and bends easily. Lead will not hurt you to touch it, only if you eat it or…"
"Your correction looks closer to what it looks like than my photo. It does appear to my eyes a little more light gray but it could be because I've only seen it indoors. I will look at it outside tomorrow.
i just did a quick test on the back.…"
"John showed an image earlier that it is indeed in relief. I kind of think a pottery stamp would be lighter than a 10" x 4" x ½" slab of solid lead.
As to the coloured patches, it could be oxidation of the lead, but…"
"It's not a very large protrusion, which means any impression this mould makes would likewise be quite shallow. Perhaps if this is a stamp of sorts for decorating a sidewalk or tree surrounding in cement, then such a shallow impression…"
"This image might provide somemore insight. It is protruding. It does appear carved, I think I see chisel marks outlining the image. I find no marking (numbers, letters, etc.) anywhere on the item.
"Most likely a mould of a carved item. Back in unfinished, which suggests this is not the finished product but cannot see any registration keys present on your piece.
Also, due to perspective and lighting I cannot tell if the Hippocampus is…"
I'm mostly interested in help figuring out when this was made, where it is from, whether it is a stamp, molded from something or chiseled (how it was made).
general reference on the hippocampus seen in the…"
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