Thank you for submitting your item for appraisal. This appears to be a watercolour by Louis WOLCHONOK (1898-1973) depicting a group of people at the beach. The image you provided appears to be a scan of some kind, the jagged lines would be typical for a reproduction process. If it is exactly what the images show it would most likely just a print of decorative value. If the jagged lines are not present in the actual water colour the estimate would be as listed above.