Dating child's manicure set

Our museum has recently acquired a child's manicure set and are
considering it for accession. It is a hard half-moon shaped,
velveteen covered case with metal and plastic accessories.  We are
having trouble finding supporting documentation to date this object
as it is unmarked and according to our donor was purchased at a five
in dime type store in the 1930's.

If anyone could provide any assistance, in possible reference
materials for dating plastics or if someone has an example of
something similar in their collections that would be greatly
appreciated.  Photos can be provided.

Emily Greenlaw
Collections Specialist-Shared Museum Resources
City of Ottawa
Canada


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                  Conservation DistList Instance 25:8
                   Distributed: Monday, July 25, 2011
                        Message Id: cdl-25-8-018
                                  ***