[villagetinker]

There is a lot of time and effort involved in what you are asking. If you have some time the internet is your friend as you can easily do a search on specific coins and see if they are valuable. The same goes for the stamps, my dad apparently had some very valuable stamps decades that he sold to buy their first house, so I understand your situation.
I would at least do an initial review, say separate the coins by 10 year intervals, do a search for any outstand (aka high value) coins in these periods and if you have any set these aside. This way you will have a much smaller number of coins to have evaluated. Misprinted stamps and mis struck coins can be much harder to find, but tend to be much more valuable. There are devices that can plug into a TV or computer and make looking at the coins much easier.
You can call around and see if anyone will give an estimate but personally, I would do the above first.