I don't think you understand exactly what 'digital' means, however, I shall tell you:
Most likely, if the Internet wasn't alive, then it's not a digital currency. Thank you.
The tally stick's tally is indeed digital. It was a currency. It wasn't electronic or transmitted digitally.
Most people who refer to bitcoin as a digital currency do so because it's transferred digitally, not because it's comprised of digits. Isn't all currencies comprised of digits? Since a money stick cannot be transmitted or replicated digitally I'd say it's not a digital currency.