Thread: my hibbard spencer and bartlett

Wanna find out around what year it was made, can't find the answer anywhere online. Its a hibbard spencer bartlett made in chicago. On the blade below the spine it had the improved rattler etched into the metal. Tue handle was described as being bone on ebay, it has a definite grain to it so it appears to be correct and be bone or some kind of black wood. Any help with idea of date of manufacture appreciated I love to know the history of my razors. -john