Changes to stamp 9077

All | New | Deleted || Stamps | Objects
1 to 4 of 4

June 26, 2019, 5:04 am UTC . . Stan Shebs . . update - perf unset -> 12.5
March 25, 2019, 2:55 pm UTC . . Stan Shebs . . update - cv -> a
April 12, 2017, 4:20 am UTC . . Stan Shebs . . update - denom 12g -> 12+12g, ndenom2 0 -> 720
April 12, 2017, 4:20 am UTC . . Stan Shebs . . update - design unset -> Josef Ressel & screw propeller