Since 1989 Woltz & Welstein In short Woltz & Welstein is one of the world’s most trusted and dynamic advisor for art and luxury... - 34'551 valuation achieved Valuation 0{{current_slide_index}} 0{{total_slide_count}} In short We deliver fluid and streamlined appraisals by recognizing and considering the many unique needs of executors, lawyers and other professional advisors. Our international team specializes in more than 80 collection areas that can serve as the basis for consignments, insurance and taxation. Learn more - 5'690 advisory achieved Advisory 0{{current_slide_index}} 0{{total_slide_count}} In short Our international team of advisors work in partnership with our most senior specialists to best advise clients on all their purchases. Learn more - 14'029 authentication achieved Authentication 0{{current_slide_index}} 0{{total_slide_count}} In short We have been authenticating, certifying and valuing watches, bags and sneakers for over thirty years. Learn more