PF-69 is not a value, it's a grade. But it does affect the value, the higher the grade the more value a coin has. A PF-69 coin is one grade below a "Perfect" proof coin.
pf means proof! and 69 is the grade. grade from 1-70.
Gold was fixed at £832 a Troy Ounce on 1st October 2010 in London. Your coin, assuming it is gold and probably alloyed with copper i.e. 22 carat, is worth around £900 - £1000. PF69 refers to Proof 69 (69 out of 70 as the highest known grade) and probably slabbed as such. It may have slightly more value from a numismatic viewpoint although as it is a modern issue this is highly unlikely.
It increases the value on the coin.
Face value The value stamped on it
For a coin it is just worth the value stamped on it i.e. the value on it's face So a common coin is worth face value, but a rare coin is worth more than face value.
Do you mean minotaur ?
South African rand
Assuming you mean a €0.01 coin, face value only.
If you mean an 1853 $1 gold coin value can be $125.00 to $270.00 for a circulated coin. And more than $300.00 for uncirculated coins.
There are two basic meanings to the term "trends" in terms of coin collecting. Both relate to the resale value of a coin. #Trends can refer to the general tendency for a coin's value to increase or decrease. Value trends for gold coinage, for example, are currently (as of 6/21/2007) rising, simply because gold itself is increasing in value. Value trends for recent US Proof sets, though, are dropping. #Trends is the old name for Coin World's coin value column. Thus the phrase "Trends at $37,000" would mean that the value according to "Coin World Trends" has been around $37,000. Recently the column has changed to Coin World Values and has spun off into its own publication.
I think you mean a "Clipped Planchet" coin. All error coins need to be seen. Take to a collector or coin dealer for an idea of value.
We need more information. The words "bundesrepublik Deutschland" just mean "Federal Republic of Germany" and are not the actual value of the coin. The coin will have a number on the front, representing its value in Marks (or Pfefning).