If you wonder what makes a crane a 3327 Crane as opposed to the later 33327 Crane you can check the top of the crane. The early 3327 Crane had a straight-cut end, the later version had its top cut at an angle so that the top of the crane would be horizontal.
Released:
1978
Years sold:
1978,
1979,
1980,
1981,
1982