the mnemonic I have is, even if coincidentally, an electrum1 wordlist.  thats the 1626 word list for electrum 1.  I have been using btc recover to solve my 'encryption'.  So I saved an impartial mnemonic or the mnemonic will only open on electrum wallets v 0.30 or before.  0.56 was in November 2011.  mabye version 0.20 was in the earlier part of 2011.