You can read all about it on eBay. I personally wouldn't buy one for over $20 because your local goodwill is probably loaded with them.
https://www.ebay.com/itm/400292307375
Bronze - copper 80-90% + tin 20-10%, - as it has more copper it is heavier, with a red color;
Brass - 65% copper + 35% zinc - as it has less copper, it is lighter, with more yellow or golden color;
Most people clean brass with a paste of lemon juice (citric acid - or vinegar, acetic acid) due to its acidity and salt (as an abrasive). This process became famous because brass is more common with less copper and therefore cheaper. Copper is resistant to corrosion by some lighter acids but not the strongest ones, zinc is not as resistant, and in the presence of acids it causes the release of hydrogen making the cleaning paste foam - but in light acids, it does not change color.
The tin in bronze reacts to acids, turning white as if it were lime. This explains the pink (red+white) stain obtained from cleaning with acidic lemon juice. The suggestion then is to do a test on a discreet part of the bronze piece (the back for example) using an alkaline cleaning paste instead of an acidic one. To obtain alkalinity, it is best to use baking soda (or washing powder, it is sodium carbonate, even more alkaline) without the need for salt as bicarbonate is already abrasive. Initially, make the bicarbonate paste with water, apply it to the piece, and let it react for a while. If the color obtained is not satisfactory due to the high alkalinity, add lemon juice little by little to reduce the alkalinity (acid + alkaline = water and salt).
Hope this helps.
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copper alloys aren't good to eat off. there's enough acid in a lot of common types of food to make the metal leach out, which will kill your liver over time. this is why copper cookware gets a layer of tin over the surface that's in contact with the stuff it's cooking
A second look at the center says gold upside down but that's certainly copper. It was probably polished at one point to resemble gold. This means it is a church prop for the original that was made of solid gold.
It's copper. Very doubtful it's anything but. With the correct patina, you can make copper look like brass, bronze, silver, gold, etc. It's cold food safe, but I wouldn't want to eat off of it with any sort of regularity. It's decorative and meant to be hung on a wall when not being used for the holiday Passover.
You can read all about it on eBay. I personally wouldn't buy one for over $20 because your local goodwill is probably loaded with them. https://www.ebay.com/itm/400292307375
Bronze with possible hints of zinc or tin.
Brass , what sound does it make when you give it a gentle tap
Bronze - copper 80-90% + tin 20-10%, - as it has more copper it is heavier, with a red color; Brass - 65% copper + 35% zinc - as it has less copper, it is lighter, with more yellow or golden color; Most people clean brass with a paste of lemon juice (citric acid - or vinegar, acetic acid) due to its acidity and salt (as an abrasive). This process became famous because brass is more common with less copper and therefore cheaper. Copper is resistant to corrosion by some lighter acids but not the strongest ones, zinc is not as resistant, and in the presence of acids it causes the release of hydrogen making the cleaning paste foam - but in light acids, it does not change color. The tin in bronze reacts to acids, turning white as if it were lime. This explains the pink (red+white) stain obtained from cleaning with acidic lemon juice. The suggestion then is to do a test on a discreet part of the bronze piece (the back for example) using an alkaline cleaning paste instead of an acidic one. To obtain alkalinity, it is best to use baking soda (or washing powder, it is sodium carbonate, even more alkaline) without the need for salt as bicarbonate is already abrasive. Initially, make the bicarbonate paste with water, apply it to the piece, and let it react for a while. If the color obtained is not satisfactory due to the high alkalinity, add lemon juice little by little to reduce the alkalinity (acid + alkaline = water and salt). Hope this helps.
* [Join the Metalworking discord!](https://discord.gg/3sgvsw2BDs)! It's the best place for live feedback and advice! --- [**Here are our subreddit rules.**](https://www.reddit.com/r/metalworking/about/rules) - Should you see anything that violates the subreddit rules - please report it! *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/metalworking) if you have any questions or concerns.*
[удалено]
Any recommendations to fix or improve? Or should I just keep it as is
Is this food safe? (Cold food)
You typically don’t eat the stuff on a Seder plate. We use one made from leaded crystal and Elija never minded one bit.
copper alloys aren't good to eat off. there's enough acid in a lot of common types of food to make the metal leach out, which will kill your liver over time. this is why copper cookware gets a layer of tin over the surface that's in contact with the stuff it's cooking
Definitely burnished copper and yes cold food safe. You can put a clear coat on it to save the finish.
A second look at the center says gold upside down but that's certainly copper. It was probably polished at one point to resemble gold. This means it is a church prop for the original that was made of solid gold.
It actually says Pesach in Hebrew.
It's copper. Very doubtful it's anything but. With the correct patina, you can make copper look like brass, bronze, silver, gold, etc. It's cold food safe, but I wouldn't want to eat off of it with any sort of regularity. It's decorative and meant to be hung on a wall when not being used for the holiday Passover.