Where it was made, proof marks, etc..
Depends on the country of origin.
Need a detailed description of ALL markings, features,etc. in order to answer.
When a person has jewelry it is important to know what the symbols and markings on it means. DE on a ring is the creators mark.
It could mean a number of things. There's no real way of telling without knowing all of the markings on the rifle, and where this marking is placed.
Assuming you mean a British MILITARY rifle, such as the SMLE, between $100-$350, depending on condition and originality. Rifles that have been "sporterized" lose much of their value as a collector's item.
the lions name is union jack and it means alot of courage
What is sightin-in a rifle mean?
probably proof markings
Firearms International was an importer, now out of business I believe. It is unlikely that they would have actually marked the gun with their name before these markings were required in 1968. There are probably other markings that may identify the actual manufacturer. Double Action refers to a revolver mechanism and I have no idea what you mean by a doubleaction trigger on a rifle.
They can mean words like our letters are kind of like their symbols. It is just another language but sometimes there hieroglyphic symbols mean sentences.
303 was the .303 inch diameter bullet that was fired by the Short Magazine Lee Enfield- or SMLE. Standard rifle of the British military from 1907 to the1960s, and still in limited use today.
What do you mean with symbols?