Superb & Very Rare Deep Cobalt Blue \"Yapoo\" Ammonia Poison c1910 For Sale

Offered for sale is a stunning example of a very rare Deep Cobalt Blue \"YAPOO\" AMMONIA / POISON bottle with Round BObble warnings and CAUTION / NOT TO BE TAKEN at the edges. \"YAPOO\" is embossed across the rear shoulder (most examples seen,though still rare,tend to be much paler in colour).The bottle is in excellent condition in all aspects,a few tiny surface marks.It is 6.3 inches high and dates c1910.