Truelove

In the novel Postern of Fate, Truelove is a paddle cart toy which Tuppence found inside the greenhouse when she moved into the Laurels at Hollowquay. According to the gardener Isaac Bodlicott, the toy was a gift to Jenny Bassington, one of the daughters of a former resident of the house. Her sister Pamela used to take Truelove and ride it down the hill. In the course of the novel, Tuppence does the same thing but it appeared that someone had tampered with one of the wheels. Tuppence lost control and crashed into the monkey puzzle tree at the bottom of the hill. At the end of the novel Tuppence credits Truelove with helping solve the case they were investigating.

Isaac called Truelove a "horse and cart", suggesting that the cart had a horse decorative figure in front such as the the one seen at this link.

The Laurels is based on Agatha Christie's childhood home at Ashfield. While there she also had a painted-horse-and-cart toy named Truelove.

Links
Agatha's brother Monty on a horse and cart that might be the inspiration for Truelove: https://twitter.com/allaboutthedame/status/1537887926545022977?s=21&t=wPFqrBKd0OBbZ_k9-jFTlw