Condrey & Hickerson first appeared in Halifax on July 12/77, they were billed as NWA-World Tag Champs, but the promotion may not have been still been a legit NWA member, it's predecessor ESA officially joined the NWA in 75, but early in 77, Al Zinck split with his partner and formed Maritime Internal Sports Ltd (a June 14 -Lights Out Match, was billed as "Non-sanctioned by the NWA"). At the Aug 16 card it was announced that Condrey & Hickerson had been stripped of the title, by NWA President Eddie Graham for failure to defend in the USA. They still headlined the next card on Aug 23, which was the last card I can find for Maritime Internal Sports.
I asked Condrey about the title on this board, and he stated that he & Hickerson won the titles in Houston, TX, but I couldn't find anything like that anywhere, might have been Kayfabing me? see
http://nwalegends.com/fanfestforum/YaBB.pl?num=1184032731