OK - I am truly being lazy but I have not been able to spot these particular issues in the Scott catalogue. They are legitimate in that they have all been cancelled.
Note that there is a rather interesting cancel on the fourth stamp shown. Passed by censor - Pakistan. What need was there for a censor of incoming mail from Dubai in 1965? Is there something historical that I am missing here?
These stamps are actually not listed by Scott. There are a significant number of stamps from these "small" sheikdoms that are not listed by Scott, but can be found in Stanley Gibbons, Michel, and the older Minkus catalogs. They might be in the old Scott "For the Record" section, which Scott discontinued in the 1990s. I'll see if I can pull out an old Scott catalog later. In the "For the Record" section, Scott only gives a brief description of the stamp set topic, date of issue, and denominations. No catalog number nor value is assigned.
The censor mark is probably associated with the Indo-Pakistan War of 1965. I would say that stamp is a "keeper".
Thanks khj. If I didn't have books and bags and boxes all identified by Scott numbers, I would switch to a different system in a flash. The thought of cross referencing everything is quite intimidating though, even if it is frustrating to run across sets like this where the stamps are quite obviously postally used but still not accepted.
And yes, the Pakistan marking makes it a very good one to hang on to. I had forgotten that particular dispute had officially ramped up to war status for a while. Though the rationale of why the censorship was deemed necessary seems a little bit hazy.