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Where do I find the worth of these? I'm guessing not much but where can I find info on these?
Listed in the Michel South America catalog. All officials from 1949, so Dienstmark 176 (cplt set), 177-83 (not a complete set). Imperf only. The latter from L-R, overprints for the ministry of defense, education, social welfare, economy, interior, health. The values not present were overprinted M.OO.PP. (public works -- don't you want a stamp that reads Moopp?) and M.RR.EE (exterior).
In my old catalog, they're 5m each for NH, no used price given. That would work out to about $1.50 full-bore retail each for NH, which would be optimistic. These were probably issued for collectors more than anything, the reason Scott ignores them.