SHC cards: reverse sides by date

Reverse sides, showing the different styles for date ranges:


pre-1988(1)
(SHC number in bottom left corner, "Adventurama")

pre-1988(2)
(SHC number bottom left, "Sabah on the island of Borneo")

1988
(no center text, dated 1988 in bottom left)


1989-1990
(center text dated 1989 or 1990; no text bottom left)

1991-2006
(center text with "Journey through Borneo" box at base)

2007 and later
(Borneo map with "Journey through Borneo" box in bottom right)