These unusual cards are early australiana.I think these were the first of make your own swap cards kits produced by Travers -weston production.
The backs are very distinctive.I originally purchased these in small collections of early swap cards from the country. 

Postage is at cost, australia wide $1.00 for up to 20 cards,
all places overseas $2usd for up to 20 cards.

IGNORE THE ORIGINAL FREIGHT COST SHOWING ON YOUR TOYWEBB ORDER
I WILL LOWER IT AND EMAIL YOU AN ADJUSTED AMOUNT.

I AM UNABLE TO CHANGE THE TOY FREIGHT AMOUNT UNTIL I MAKE A NEW WEBSITE WITH PLAYING CARDS ONLY  ;O)

see our list  of FAQ for more information.