1928/2001 Netherlands Unused Stamps

This is just a small piece of what I have laying around im really unexperienced just 30yrs old so please point out anything I could do different or better. This is 1 book I bought dating 1924 to 2001.
All looks mint and unused possibly the best part of what I looked into so far
From the Netherlands I also have many years of "Kinderpostzegels"
Children sell these and the profits go to charity this been a staple on the Netherlands for as long as I can remember and in this collection goes into the 1950s also till 2001 I believe so I assume the collector either got to old to continue or passed away.
I bought the collection in my believe for allot under value so I hope to list everything I have here and mayby have some good time in my 50% free time when im not on the waters of the Netherlands and Belgium I work 3 weeks on 3 weeks off so I got plenty of time to explore a new hobby.

Another book starting at 1928 till 1998 I think far as I seen all unused
In this book its also mainly from old to new but some pages later I think it says 1928 to the side (dates are next to the stamps)

Book 3 starts 1924 all Netherlands and unused not 100 sure they all are but I havent seen 1 thats been stamped on any of these books
Btw mayby u have seen these books before mayby some user thats not been active for a while I bought this lot for just a little bit of money on an auction site if there is a way to get in touch with the original/previous owner of this collection just for verification. Theres decenia of collection in this lot and I cant believe a collector of this caliber would ever auction of his collection with no reserve you guys know collectors if the person is still alive and can be traced down and has proof this is his or hers I payed 28 euros and 9 euros in fees so basicly 2 crates of beer (no im not interested in selling the collection yet) I much rather make a trade for something cool maritime possibly dutch old maritime like VOC gonna put my time in to display everything on here overtime will take me a couple days please let me know whats youre thoughts on this.
Deceased persons family dumped his life work at auction? Or how should I interpret this possibly the collector expected a better turn up on the auction? Stolen? I cant proof I didn't steal this but if the owner is still around he should come collect it 100%

Very nice collection. The stamps all appear to be in excellent condition and hopefully never hinged. I'd say you did very well based on the price you paid. Thanks for sharing.

What does hinged mean im completely new also I just found a very important letter from the collector to some prominent business owners whos companys still excist till this day il keep you giys informed this is awesome I reached out to them already

What is that like a little sticker to attach it somewhere?

A hinge (gomstrookje) was used to stick stamps to an album page. Very old hinges may damage the stamps, more modern hinges do not do so as much. If you remove even a good hinge part of the stamp's gum will be damaged. You will see some disturbance to the gum. A stamp that has never been hinged is worth much more than one that has a hinge attached or has once had one attached. This especially is the case up to 1945. Stamps that have never been hinged and have full gum are called unmounted mint (U/M), unm., unm. mint (postfris). Those once hinged are called mounted mint m/m (ongebruikt, ongebruikt met plakker). Across the Atlantic, 'hinged' is used more frequently than 'unmounted' you will see in Europe, especially the UK.

Your collection appears quite complete. You might want to look for an older edition of the 'NVPH speciale catalogus.' You should find one from the period 2010 - 2015 for less than € 10. You will be able to identify your stamps. They appear to be in chronological order, but split into 'themes.'

The first post looks like a complete run of 'zomerpostzegels' up to the late 1990s. From 1992, these are known as 'ouderenpostzegels.'
As a general rule the mid-1930s, and late 1940s, very early 1950s sets have some value. The portraits ending with the stamps depicting Rembrandt and Boerhaave are catalogued at several tenners a set and, normally, will cost you € 20 - € 45 to buy in good condition if 'postfris.' If they have been hinged, you are talking € 5 - € 15 (at most).

The big stamps with the palaces up to the two flowers sets (zomerzegels 1952 and 1953) will set you back ca € 5 'postfris.' The portraits, buildings, and Rembrandt ones will set you back € 5 - € 10. The remainder is in the € 1 - € 2 area a set. To be honest, they are worthless in monetary terms.

It looks like some later stamps that are not 'zomerpostzegels' have found their way into the stock book.

- Will return to the others later today. -

Not sure where you live but check your local library. You may be able to borrow the Scott Catalogue from the library. I think Volume 5 is Netherlands.

Is it expensive I might just go buy one instead

Forget Scott. Since you are Dutch and from the netherlands, only the NVPH catalogue is relevant. No one in this part of the world uses Scott for Dutch stamps. If you want a worldwide catalogue for Dutch stamps, use Michel. But , again, NVPH is the only relevant one here.

Ok I will look it up btw guys yall see anything you neww in my collection?

The second post has most of the occupation issues for 1942-1944. These go for minimum prices. The 7 1/2 c 'Michiel de Ruyter' stamp comes in two varieties. At the bottom are 'Van Krimpen' permanent stamps from stamp books.

Then, there appears a complete run of 'red cross' issues. The first set (1927) showing King William III and Queens Emma and Wilhemina and the Red Cross will set you back between € 20 and € 30 in good unmounted condition. The second set is from the early 1950s (after the 'watersnood' as one stamp depicts that) and will set you back about € 5. Ten, they have minimal value again. With a hinge, the first set can be bought for ca. € 10 or less.

The 'Olympics' stamps start with 1928 (Amsterdam Olympics) that go for € 50 - € 80 unmounted. That is the only one with any monetary value.

The Europa stamps also appear complete from the start (1956). All international organisations (NATO, BENELUX) and some 1970s commemoratives are mixed in there. Only the first set of Europa stamps with the tower have any value. If you want to buy them unmounted mint, you will have to pay ca. € 10. The 'cogwheels' on the second page come with and without watermark. If you have a UV-lamp, they come with and without phosphor coating. One has the watermark, the other not. The phosphorised one were an experiment for the optical letter sorting in Rotterdam.

The Christmas stamps also look complete from the start in the late 1980s.

80 is kinda nice they are all untouched never used front and back as new the entire book the man who put it togheter took great care
Amything u would be interested in buying all in 1 go?

Is this something interesting I find it quitte interesting myself