Because the original is no longer manufactured, your "buying" options are limited to finding modern equivalents or global variants:

Nestle Alpine White , the creamy white chocolate bar with chopped almonds introduced in 1985, is currently and not available for standard retail purchase. While Nestlé sold its U.S. confections business to Ferrero in 2018, this specific bar had already been off shelves for decades, having been largely phased out by 1993. Buying Options & Alternatives