Efficiency = input / output If expenses are $60 and revenue is $80 (perhaps net of interest revenue/expense) the efficiency ratio is 0.75 or 75% (60/80) â meaning that $0.75 are spent for every dollar earned in revenue.
As mentioned above a true antique is more than 100 years old, but some stores value furniture older than 50 years as antique and fine antique dealers will label items antique if they are more than 150 years old. The best way to find out is get the exact age of the piece.
Identifying an item that is obviously a collectible - something less than 100 years old - as an antique makes savvy buyers feel like you're just trying to pull one over on them. It can also make you look ignorant about what you're selling, or even worse, dishonest. If an object is obviously newer than 100 years in age, just call it a collectible. If you honestly feel like an item is over 100 years in age after doing your homework, then it's perfectly fine to describe it as an antique.