"Original sign from the first seaplane base on Lake Winnipesaukee, NH"
Found this while browsing the web, and found it a little interesting. Possibly a genuine piece of lakes region history, if the text on the back side is truthful. It's an E-bay sale the link below is for the listing. A little pricey but maybe worth it for an aviation enthusiast or someone looking for a unique special item.
(For the record I have "No" meaning "0" connection with the seller I just found it interesting and do not know much more than what can be seen in the listing)
https://www.ebay.com/itm/Original-si...gAAOSwLuBcBBmQ