R. Hankey etcher?

unnamed, R. Hankey (?), 4.5" x 6.25", etching with watercolor

       The signature on this etching is hard to read and could be Henkey or Hevkey. There was a well known British etcher named William Lee Hankey, perhaps this is a relative? This small etching was framed by the Zepp Photo Supply store of Baltimore, which was founded in 1900 and in business until the 1980s. I am guessing this etching dates from the 1920s or 1930s. Any help is appreciated.