I Inherited Some Stamps

I came inherited some stamps a number of years ago and thought I will post them here to get some sense of value if any. Here are some to start.

The France 1924 Olympics set is shown as $34 catalog value on stampworld.com, which equates to about $5 (15% of catalog value) if sold on ebay.
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That's well above average for inherited stamps.
Could be worth more if they have not been hinged, which is possible with the mounts shown in your photo.
Check on ebay under Sold items, if you want an estimate which is better than a % of catalog value.

The Spain 1930 De Goya set is a classic set of stamps, although the lower 2 denominations are common stamps and not valuable.
stampworld.com has the 10 Pta at $13 catalog value (so 15% is $2 retail), but I'm not sure that is accurate as they seem to sell for less on ebay.
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(Note: photos of these stamps are apparently censored on stampworld?)

The Nicaragua are 1939 air post, minimum value stamps (maybe 5c each).
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Still, nice looking stamps.

Nice items, but overall value is not what you would have hoped. You may get $20 from a dealer, but probably more like $10. You may want to consider keeping them and handing off to a child / grandchild for their amusement.

Anything older to post?

Yes there are some older items, still working my way thru them when I have time and will post as I organize them .
The stamps are unhinged from what I can determine, though I certainly don't have the expertise you folks do. For the most part they have been in a box since early 60's untouched until I started rummaging now and then about 8 yrs ago.

Thanks again for the feedback, greatly appreciated.

@Donato
In the Yvert-Tellier 2018 catalog, the series of French stamps is 160 euros MNH and 51 MH.
On stampworld, the MNH series is sold for 40 and 50 US $

Yes , good and well preserved
stamps.

National Parks

Envelopes

The 1934 National Parks plate blocks are a lot scarcer than the plate blocks of 1938 and later US stamps - some "good" stuff.

Yes, improving the more I see, but please show us more.

Donato, yes please keep posting more. We all love to see collection material! The way you've cropped the newer images definitely helps the stamps and covers pop out more.

Want to ask if you've looked to see if your phone camera has settings that allow you to increase image resolution? That would be a nice next step.

I tried fiddling with IPhone 14 and could not get a noticeably better result. I will look into other options.

Not sure what year this is.

?

That last one is a revenue stamp.