Kagetsuan - Engraved Board, Signboard, Antique, Collectible, Tea Ceremony, Flower Arrangement, Signed

This is a hengaku (hanging board) or signboard that was once displayed at the entrance of a tea room or a haiku dojo. The signature reads Suiko.
Its authenticity is unknown. This is a retro, antique item. It would be perfect as a signboard for a soba restaurant or similar establishment, especially if it has a historical connection.

Width approx. 83cm, Height approx. 12cm (height of the board)

Attached is search information for your reference:
Kagetsuan (花月庵): This likely refers to the Kagetsuan-ryu (花月菴流), one of the oldest schools of Sencha tea ceremony in Japan, founded by Tanaka Kakuo (田中鶴翁) in the late Edo period. Suiko (翠香): This could be the pen name of a tea master associated with this school, or a craftsman (such as a lacquerware artist) who created tea utensils. For example, in the world of lacquerware, there is a renowned artist named Toyohira Suiko (豊平翠香) who has produced many tea utensils.

The gently curved, unique shape suggests it is likely made from repurposed funaita (boat planks), which were once used for the bottom or sides of boats. In the world of tea ceremony, the spirit of wabi, which finds beauty in aged or repurposed materials, led to the popular practice of using boat planks for ceilings or signboards (such as funaita ceilings).

Thank you for looking.