If it's .550, not just 550 it is referring to the percent (.550x100=55%) of silver the product is made from.
The "550" mark on silver salt and pepper shakers typically indicates the purity of the silver used in their construction. Specifically, it refers to a silver content of 550 parts per 1,000, which is equivalent to 55% silver, categorizing it as a lower grade of silver. This designation helps consumers identify the quality and value of the items, as higher silver content generally signifies better quality.
The marking "925-1000" on sterling silver indicates that the piece is 92.5% pure silver, which is the standard for sterling silver. The "550" marking could represent the specific manufacturer or designer of the piece.
This represents the purity of the silver. "925" means the item is 92.5% pure silver; "1000" is the millesimal fineness, indicating it is 92.5% pure; and "550" is likely a maker's mark or design number.
Many vintage pieces of hammered aluminum are numbered. I think it is similar to a serial number in that all items with the same shape and design would have the same number.
All 500-series projectors can take the 593 tray.
January, 1951
yes- see the link below marked PICTURES
Mean average of 175, 550, 750 & 1100 (175+550+750+1100)/4 = 643.75
220
It means 550-330 years before common era. BCE stands for before common era.
If you mean the DSLR camera its Sony.
The answer should be -10% as the discount price 10% more than the original price.