You know, Victor Sarasqueta was born in 1864: <http://es.wikipedia.org/wiki/V%C3%ADctor_Sarasqueta_Suinaga>

If he opened his namesake gun business in 1883 he'd have been 19. I think it more likely that the 1883 date Wieland was given by the Sarasqueta family must have been the year he started in the business as his older brother's apprentice rather than when he started his own business. That just makes more sense...Geo