I have one. I bought it at JM Fields (long since out of business) in 1960. It has Brecia Italy proof marks. Has given good service. I don't know value, but would like to.
Depends on the serial number which was not provided
88, the absolute value is how far something is away from zero
It is worth 88.
88. The absolute value of any positive number is the number itself.
A Model 88 WHAT?