Leap Year : : 29 February 2016

[Keith S. Chambers]

It only happens twenty-five times in each century, that odd day on the calendar, 29 February. What a great opportunity to sneak in some postal history to your mail art this year.

At the end of this month, Monday, 29 February 2016, you can gather your out-going mail art, get yourself over to your local post office and ask those nice people at the counter to hand cancel your cards and letters with the station's unique hand cancellation mark with the date.

Ready to make the leap?

[Heleen de Vaan]

And I am happy to have received this new round stamp from the USA today (I love this moon), thanks to FinnBadger:

Which came with not only one, but even also a second '29 February' postmark! 

[Dean aka Artist in Seine]

OH NO Heleen, mine wasn't cancelled the 29th.  What a pain.

[Heleen de Vaan]

Ouch, yes! :-)
Shall I cut out the stamp and return it to you so you can re-use it and give the post office a change to repair their miscancelling? Or shall I keep your artwork, complete, knowing that only me and you know that this mail art was meant to be cancelled on Leap Day?

[Heleen de Vaan]

Meanwhile I counted not two, but even three 29 Feb postmarks on FinnBadger's mail! Seems that USPS is compensating La Poste, who of course became confused by all postmarks on the back (or front?) of your, Dean's, mail art!

[Ruud Janssen]

from Crackerjack Kid, stamped on 29-2-2016!

[Dean aka Artist in Seine]

The 29 Feb 2016 Heleen de Vaan sending

[Heleen de Vaan]

French post unfortunately got so confused that they forgot to add a 29 Feb postmark... (as shown in my post of 9 March here).

Thanks again, Dean!