My Inherited Stamp Collection - Please Tell Me If Any Of Particular Interest???

I would be very grateful for any thoughts of my newly inherited stamp collection as I have no idea if there are any of particular value. Many thanks!

In the British section the Penny Reds may be worth a few dollars, though I see most are perforate, it does depend on the specific issue. The two pence blue is also a perf issue (later than the imperfs), and tend to be lower value but a few dollars.
The other countries all look to be modern (i.e. post 1940 issue), and of little value in monetary terms. I would say the sentimental value of this collection is where it is most appreciated.

The only other one I see that might be of any value is the Great Britain halfpenny "bantam" stamp on the first page. It's the dark reddish-brown one just below the block of four presumably penny blacks, but which are lifted off the page to show that they are stamped facsimile on the back. These of course are not even true stamps. But the halfpenny bantam (Scott 58, or Stanley Gibbons 48)could be worth a few bucks if it's a plate number 9, which catalogues 850 in either pounds or dollars. It's a long shot because plate 9 is pretty rare, and this example seems so heavily cancelled, it might be difficult to read the plate number which is in the scroll work just next to the number 1/2 on both sides of the stamp. The cover with the penny red imperforate stamp on it on the eighth page, probably Stanley Gibbons 8 looks a bit dodgy because the cancellation on the stamp, especially the bars at lower center don't seem to extend onto the envelope.