I just purchased a huge collection of stamps and I know very little just enough to be dangerous. There is an envelope containing at least 50 1851 grey washington stamps! just to give you an idea. A few weeks prior at this garage sale I purchased the postcard collection of over 5000 cards collected by one person (the deceased mother) they started with postal cards in 1870 and went right up to 1970. I went to the same garage sale this weekend and they had the deceased fathers stamp collect. He started collecting them in 1935. There is a Paragon stamp album that is at least half full and 15 shoe boxes of corespondence starting in 1850's through the 1960's. The gentleman was a minister and college professor and aparently an avid stamp collector. Their parents and they themselves were missionaries and were responsible for founding colleges all over the world. There are large volumes of correspondence from places like China, South America, Hawaii etc.
I have been able to find some of the stamps for sale on here for outrageous prices but I am unsure of how to list and grade them. I know stamp collectors are very particular as to condition and I am unsure of teminology and how to grade them. Any advice or help will be much appreciated.