I was relatively new to the paper wallets too. So I started this post that might be helpful
https://bitcointalk.org/index.php?topic=1965815.msg19583573#msg19583573 I wanted to make sure the paper wallet was valid and that my coins would not be sent into oblivion or worse the private and public key were not a match.
I tested one wallet with $10 and swept it to make sure I would be able to retrieve,. it worked..but as You can see once swept you should never use again.
I also have a Trezor. So I split between the paper and Trezor. Also my laptop acts as a cold storage since it will never connect to the internet.
Goodluck
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). BTC Sold Value is now included on each casascius bitcoin page. This is determined by a coins opened date. 
Reminds me why I keep on holding to my loaded coins and not sell or redeem them!
