Bip39 Standard Even though it utilizes BIP32 technique you'll be able to however import BIP39 seeds into Electrum wallet. Also besides BIp32 You can find BIP44 Model which some wallet use for that era of seeds. Lots of people back up their wallet seed phrases or personal keys on paper, https://bookmarkpagerank.com/story18542949/bip39-passphrase-the-smart-trick-of-bip39-phrase-that-nobody-is-discussing