Check out the Antique Outboard Motor Club, Yankee Chapter website: http://www.yankeeaomci.org/feature_outboard-2.htm It has a chart that lists the model & years built.
I have the same model, from the research I have done I have found that model is a 1953
the motor is a 1967 outboard
I'm sorry that I was unable to find any database for Elgin serial numbers. They were sold by Sears, and the small ones (up to about 3 HP) were made by West Bend, the larger ones were made by Scott-McCullogh.
1988
I have three of them. That model was made in 1954 and 1955.
An Evinrude outboard, model number E185TXCRS would be a 1984 model, 185 hp.
A Johnson outboard, model number CD24D is a 1967 model, 6 hp engine.
A 200 hp Johnson outboard, model number J200STLCDR is a 1986 year model.
Johnson 4hp outboard bj4brcud
2004
A Johnson outboard, model number LT-10, would be a 1940 model, 5 hp motor.
Johnson model number J70ELCSA, is a 1980 year model, 70 hp outboard.