@Valmir68
I don't think there are stupids questions while collecting.
Yes it is just an hobby but you're investing your time, passion, even money!
I will not focus too much in opinion of other collector. However each one of us have an interest on collection.
Example
Perfins have been considered as damaged stamps for decades... now some stamps or postal history are really rare (and highly valuable).
I have opened all my 3.1 crypto stamps [CS] the physicals, real stamps.
I haven't checked again but if available I will take also some "on chain" stamps like 3.0 CS... I have been lucky enough to find colors and some rare combinations.
Personally the idea that you need to "open" before get color or details it has been REALLY funny experience (at least to me)! it's like a "scratch card" more than a game. It reminds me "filigrana" of italian stamps.
Example:
You need to check carefully back of each stamp since it's full of surprises (and some cases are very rare and highly value stamps) due the watermark you can find.
Some stamps "no value" are literally valued also x100 or x1000 it depends just a simple watermark.
Do you know
"Cavallino Ruota?" 1500 euro
Full series of
"Cavallino Stelle" .... 10 euro!
) 
