The preliminary sales data released by Gold Resource Corporation is a direct indicator of the company's performance. Positive sales figures, especially in gold equivalent, are likely to be viewed favorably by investors, potentially leading to a short-term increase in stock price. The sales of other metals like zinc, copper, and lead also contribute to the company's revenue and are important to consider. However, without comparative data from previous periods or expectations, it is difficult to assess the full impact on the stock price.