How rare is Factory A/C on a 67 swb?

[brandster]

Found a 67 short bed truck im interested in and will be checking it out in person to make sure its not a rust bucket, but so far what i've seen as far as pics is its not to bad of shape, but definitely not the prettiest truck right now.

Anyway, some of the factory options are big back window, 327 engine, wood bed floor and factory A/C, and this is all verified by the glovebox spid, which also matches frame and cab vin.

Is that pretty rare for a 67 swb? I personally haven't seen many 67 swb trucks with all of those options.