The model 130 was made between 1953-1970. Unfortunately you did not state the condition of the pistol so no estimate of value can be given. You will have to rate it. Is it in excellent, very good, good, fair, or poor condition and is it still working?
Which country are you referring to? A UK 1970 proof set (last of the pre-decimal issues) can be bought for around £15-20.
Pre retirement - 1970 TV is rated/received certificates of: Belgium:KT
It means just before the 1970's.
pre-accident value
Pre-1965 US quarters are 90% silver with a value of about $2.50 just for the silver.
3 months
It is impossible to say without knowing what country you're asking about.
500
around 50 cents
Serial number
In most cases the value is going to be based upon the value of the stamp itself. The pre-cancel may be of interest to specific collectors. Some collectors believe they de-value the stamp. Some experimental pre-cancels can be quite valuable.
To increment a value by 1, you have 4 choices:value++;++value;value += 1;value = value + 1;Pre and post processing incrementation/decrementation refers to the first two: ++value and value++.Both do exactly the same, as both will increase the value of 'value' by one.If we have a situation like this:int value = 0;int value1 = 0;value1 = value++;This essentially means:value1 = value;value = value + 1;Where ++value means:value = value + 1;value1 = value;