This is a wonderful vintage squeaker made in Germany around 1919-1920, at the beginning of the Golden Age of production immediately after WWI. According to the seller, the squeaker mechanism still works, rare for these old toys. However, I don't think this was made for Halloween, but maybe for Valentine's Day. The price seems right for what it is. If it was truly Halloween-themed, it would command perhaps double, plus some.
Mark B. Ledenbach's vintage Halloween collectibles blog.