Bip39 test vectors https://sergiouwfc622.fotosdefrases.com/exactly-how-to-generate-a-bip39-seed-a-step-by-step-guide Though it utilizes BIP32 approach it is possible to nevertheless import BIP39 seeds into Electrum wallet. Also other than BIp32 There may be BIP44 version which some wallet use for that era of seeds. BIP39 solves this through the use of human-readable seed phrases compo... https://bookmarkchamp.com/story20413542/bip39-mnemonic-to-private-key-not-known-factual-statements-about-bip39-word-list-txt-https-t-me-bip39-chat