We don't have synonyms for halers yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are haler, haters and walers.
(n) :
Alternative form of heller (“currency unit, 100th of a koruna”). [(historical) A German coin equivalent to half a pfennig, later used widely as a small coin in Central Europe and the German Empire.]
(n) :
Alternative form of heller (“currency unit, 100th of a koruna”). [(historical) A German coin equivalent to half a pfennig, later used widely as a small coin in Central Europe and the German Empire.]