Vintage 1906 Excelsior Varnish Works New York Advertising Postal Card McKinley For Sale

This is a vintage postal card from 1906, advertising the \'Excelsior Varnish Works\' located at 261 Broadway, New York. The card features a pre-printed 1-cent \'McKinley\' postage stamp, a common practice for business reply or advertising mailers of the era. The back of the card is blank except for a handwritten \'1906\' in the lower right corner, indicating its likely year of issue or use. The card is made of a light tan/brown cardstock and appears to be unused, with typical age-related toning and minor wear. A wonderful piece of early 20th-century New York business history and philatelic interest.