This is a nice example of the Keystone Wood Toys #344 Tug and Barge set. The tug is 6″ long and the two barges are each 5.75″ long. The set was made between 1953 and 1957.
From my personal collection.
Keystone Wood Toys Tug and Barges #344
Collecting Keystone
The History of Keystone Manufacturing Company From 1919 to 1967
