Question: Where was the hoard of coins found that proved Ubouzanes was a Gondophare? 
Sentence (from "Indo-Parthian Kingdom"): These kings have traditionally been referred to as Indo-Parthians, as their coinage was often inspired by the Arsacid dynasty, but they probably belonged to a wider groups of Iranian tribes who lived east of Parthia proper, and there is no evidence that all the kings who assumed the title "Gondophares", which means ”Holder of Glory”, were even related.
Relevant evidence: No