Used Sunfish Sailboat For Sale How Do I Determine The Year Model Of A Sailboat?

How do I determine the year model of a sailboat? - used sunfish sailboat for sale

I'm ready to buy a used sailboat and asked how old they may be, is a sailboat with a Sailfish Olympic Games and in the letters / numbers "LF W5 1243" printed on the side. I searched the internet for the model year, but failed.