When was bip39 introduced https://marioqxzy082.raidersfanteamshop.com/comprehending-the-function-of-bip39-in-copyright-pocketbooks Though it works by using BIP32 system you could continue to import BIP39 seeds into Electrum wallet. Also apart from BIp32 There is certainly BIP44 Model which some wallet use for your era of seeds. Want to check which wallets support the BIP39 mnemonic re... https://socialicus.com/story5906676/bip39-languages-indicators-on-bip39-standard-you-should-know-https-x-com-tundra838554