Same playfield - El Dorado City of Gold is a remake of the classic El Dorado/Lucky Strike/Target Alpha/Solar City and Canada Dry from 1975 -77
Gottlieb was using classic playfield designs from the 1970s to save on production costs. They also remade Jacks Open 1977 (as Jacks to Open in 1984), Orbit/Outer Space 1972 (as Super Orbit in 1983) and Card Whiz/Royal Flush 1976 (as Royal Flush Deluxe in 1983)
Ed Krynski - R.I.P. dude 
Good One Tony
Don't forget Fast Draw - Amazon Hunt !
