VINTAGE Metal Team of Horses with Hitch - TINY 2 1/4" LONG - RARE

Description

This is part of a vintage toy collection.  The original owner has had everything in smoke free storage for a very long time.  Very tiny team of six horses, chocolate brown in color.  We cannot remember what it used to be hitched to. Point on the hitch is still intact. Only 2 1/4" long, 1/2" tall, and 1/2" wide.  On the left side, the back horse is missing its tail.  On the right side, the front horse is missing both legs and some paint is missing on the body. The middle horse is missing the front leg.  This is not a really hard metal, it can be bent.
Hoping someone out there can complete their set with this piece.  We are guessing that it is 1950's or '60's.
Thanks for looking!