Ringsend usually operated a southside bound 10 from City Centre, I never actually seen any Ringsend buses on the northside leg of the 10, but they were definitely AVs from Ringsend on the 38,and the odd RH from RH169-175 Im pretty sure AV1 even did it one day, I cant recall the exact numbers, but AV104/105 were definitely on the 38 some mornings, the always stood out amongst Phibsboros/Broadstones lot..