IIRC, Reiser was a house brand for Brook Mays Music out of Dallas. I rented one for a while, as did my mother-inlaw. Mine was Chinese, her's was Srilankan, both plys. My Eberle was a big step up, as was her Kay.
Do a search for Reiser on talkbass.
There should be a country of origin indication inside the bass.
Playing Double Bass - less expensive than a red convertable, less complicated than a new wife.