The model 7 and 7S was manufactured between 1938 and 1954. There is no 7A listed.
I recently purchased a new savage .22 clip for my old 7a and used a grinder to put a notch in it so it looked like the old clip and it works great
I will assume you mean the Model 7 .22 autoloader. If I am correct in that assumption then 1951 was the last year they were manufactured.
In good condition I would guess $130 to $160, this is a fine .22, actually my all time favorite weapon, this was my grandfathers first gun and I still have it and fire it regularly, a real smooth and accurate weapon.
9a-a = 19+7a 8a = 19+7a 8a - 7a = 19 + 7a - 7a 1a = 19 a = 19
It is: 2a+5a = 7a when simplified
You will find Department of Defence Financial Management Regulation, Volumne 7A: Military Policy and Procedures - Active Duty and Reserve Pay at the related links.
-7a + 3a = -4a
It is: 7a/5xy