2. Open electrum
3. Import the private key: click wallet -> private keys -> import. If it is qr code, click qr code icon next to the import button.
Scan QR code is only possible if you use Electrum mobile, and with Electrum for desktop, you can not scan QR code.
Mobile devices are suitable for hot wallets and with small funds. If you want to store big fund, at least big fund with you, you have to use a computer, laptop that is safer than a mobile device. Best if you can have an airgap computer or laptop for your Electrum wallet.
Another question would be then what makes a physical copy more "rare", so to speak - and what would make its price higher in the eyes of the others who collects them?
The older it is - the better the odds of getting yourself a good deal?
It's about physical stuff that is used to attach Bitcoin private key. 0.001
BTC is always like this, and value of that collectible can change with Bitcoin price and with that physical stuff value.
Collectibles are risky, if the issuers are scammers, they will sweep private keys and steal your bitcoin.