Bip39 private key recovery tool https://www.anobii.com/en/01000289012ff9b293/profile/activity Although it makes use of BIP32 process you could continue to import BIP39 seeds into Electrum wallet. Also other than BIp32 There exists BIP44 Model which some wallet use for that era of seeds. This will likely show you empty balances. That is why https://thebookmarkage.com/story20116918/bip39-passphrase-bip39-generator-secrets-https-cutt-ly-uryc5rw7