Update
Updating database... Please wait.
Monday 8 January 2018 at 00:30
i don't believe they installed the bill validator from factory it was a direction they were going in for operators. and i believe the first bill validator in a factory game was in the 90's but don't quote me!
below is info a fellow insider provided me with but apparently not only vector has this doo...
Source: http://pinside.com/pinball/forum/topic/elektra-owners-club-fans-also-welcome/page/9#post-4163448