1884 QV ½a green die PSE envelope cancelled with Experimental marking "A/ F-6 / FEB 28" to Hyderabad Deccan

1884 QV ½a green die PSE envelope cancelled with Experimental marking "A/ F-6 / FEB 28" to Hyderabad Deccan
1884 QV Queen Victoria ½a green die PSE envelope cancelled with Experimental marking "A/ F-6 / FEB 28" to Hyderabad Deccan with delivery cds. on reverse; 'A' letter is for the circle - North West Province and Number of an experimental post office is F-6