Prototype
The first, typical or preliminary model of something, especially a machine, from which other forms are developed or copied.
“The firm is testing a prototype of the weapon.”
Merriam-Webster Online Dictionary
prototype (noun)1.
an original model on which something is patterned - archetype
2.
an individual that exhibits the essential features of a later type
3.
a standard or typical example
4.
a first full-scale and usually functional form of a new type or design of a construction (as an airplane)