Many of the Hasbro plush were released without model numbers, many times only an assortment number is available for all the plush in that assortment.
Most Hasbro plush have no model or assortment numbers on the tush tag.
Early Hasbro plush had a four number model or assortment number.
In 1984 the numbering system changed to five numbers, as a 7 was added to
the begining of most models and assortments to create the 5 digit numbering system.