The 50c Nord Alexis stamp of 1904
Does anyone have a town cancel other than Port-au-Prince on Scott 101?
The few used examples that I have all Port-au-Prince cancels.
I believe that covers, used multiples, and town cancels are also rare because it was such a high value. At the time of issue, single weight letter rate for mail addressed abroad to North America or Europe was 10c de g, the domestic intra-town letter rate 1c, and the domestic inter-town rate 2c.
Another reason for the scarcity of covers, used multiples, and town cancels is is that numerous overprints and surcharges were applied to 90% or more of the 1,000,000 stamps printed.