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- Naval Brass or Admiralty Bronze "SHIP PIN" from the Time period 1780 – 1850 - For measurements and more detailed pictures: see pictures ---------- Item is in good cosmetic condition.
Weight: 193 grams (g) / Length: app 17.5 cmBolt from a metal-sheathed vessel, likely originating from a large seagoing ship (such as a warship or an East Indiaman)Element Percentage (Oxide form)Interpretation for dating.Age: Late 18th century to mid-19th century (approx. 1780 – 1850)48 wt% SiO2 - 21 wt% CuO - 10 wt% SO3 - 8 wt% SnO2with spore-elements FeO wt7% en ZnO wt5% Copper (Cu)21%The base of the alloy.Tin (Sn)8%This is a relatively high tin content for "Naval Brass."Zinc (Zn)5% Crucial: The presence of zinc in this ratio points to a specific period.

Material: Edax elements measurement results (copper, tin, zinc) confirm that this is a form of Naval Brass or Admiralty Bronze.

Function: These pins were used to sheath the wooden hull of a ship with copper or bronze plates. This was done to protect the hull against the shipworm (Teredo navalis) and algae growth.

The "Crust": The high concentration of $SiO_{2}$ (48%) and $SO_{3}$ (10%) proves that this is an archaeological find that has lain in a maritime seabed for a long time. The silicon originates from the sand/sediment in which it was embedded, and the sulfur ( $SO_{3}$ ) points to the formation of copper sulfides, which is typical for an oxygen-poor (anaerobic) seabed.

Comes as pictured.

Combined shipping no problem.

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SHIPPING

priority registered insured airmail

inside European Union outside European Union

15 USD 25 USD

The shippingfees for shipping outside Europe are automatically placed*

If your country is inside Europe than please ask me to adjust the shippingfees

* because I started as an ebay.com member and stayed an ebay.com member

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Payment: PAYPAL - THROUGH IBAN BANKACCOUNT

If an item is broken or the optics are not as described as written in my auction. Just send me an email about this matter and you can ship that item back to me. When it has arrived I will give full refund (shippingcosts back to me included).

I ship every Monday there I have a daytime job. At Monday mornings I am free and able to deliver the packages at at our local post-office, but if you really want the item A.S.A.P. please let me know and I will ship within 2 days.

There is a possibility that you are currently bidding on one of my other items. If that is the case, please let me know and I will hold up on packaging and shipping so I can ship them together in one strong cardboard box.

Normally people can send a NON PAYING BIDDING ALERT after ten days. But due to the changes of The Ebay Policy I will not send such an N.P.B.A. in the first time. My aim is to send after one month at least 2 emails to remember you of our temporary forgotten transaction.

Ebay is a hobby of mine and I will not bring people in disadvantage because other things in life can be more important than Ebay such as family events - accidents â€“ illness.

Please be aware that I live in THE NETHERLANDS - EUROPE. When I started selling on Ebay there was only ebay.com.

Shippingtime can vary from 1 - 2.5 weeks.

As written at the Ebay site: Sellers are not responsible for service transit time. Transit times are provided by the carrier, exclude weekends and holidays, and may vary with package origin and destination, particularly during peak periods.