Seems to work "OK".... I just tried it using an old Dogecoin wallet.dat using the "bash" shell in Windows 10 Dev mode...
strings wallet.dat | grep purpose
and
strings wallet.dat | grep name
Both returned a list of addresses contained in the wallet.dat ("name" seemed to list more results)... All the addresses were shown in the "correct" format for the wallet type... ie. they all start with a "D"... so I can tell they are "Dogecoin".
Give it a try and see what addresses you can see listed and see what the first letter of the address is... that should help identify which altcoin the wallet belongs to.
I get these addresses
name"E3QbrBywbvWuq6BbrY1xoCToqPZnFrzukh
name"DtqN21K2QdLoTu91oxf2i5GueMfGeW3ah3
name"EEdQuB9foaQ53r7UGFBrt6dt7nuUyfTGJfs
name"E2tfCHV4CQiXsVCLuGKxnJmkNmRceAszQ8
name"E7546iTPpfwLgrzBsmCzGPKKh8ohtxLi8c
name"E6QUbLk9YdCWvZ4KUshVYrbKCDuUFu9KW4
name"E2CCdrwZGcdav2paJ2DwvoEPg96zY71epr
name"E1A6WogjpqU3KjjoRUD63f7kofrFozmyfg[
name"DxoRbTR8HyopHfwLM8d5xV27qEWdCJz2Lc!C
i just run bitcoin2john.py and i get it then i still bitcoin? this is not the complete hash
python2 bitcoin2john.py wallet.dat
$bitcoin$96$ca929af9a552b9f26bc7dcf5fd0d96fa62ebe9426305de8496767c197da10586435063b635f7367667488ecdf35d6b08$16$f3701f86a38b2731$113636$96$e42f0ea1323571f16ce8a88e43fe8f96d09b719c4bdf50d83f26817a008f570e347ab1d934b2fc836d6c66b4e3e78a85$66$03fe
ok im found goldcoin thx help.