1899 Postal Card

Here's an antique postal card that was used from 1888-1889. This one was still in good condition and almost new except from little scratch in some parts. What interesting in this item is that it supposedly cut into two unlike this one which still uncut and was never used at all.

Here is the the upper half of the card which was cut and reversed for better viewing:

The words underneath reads:

Nota. lo que debe escribirse se hara en el reverso e ira firmado por el
remitente. RESPUESTA

(I think that the online translation I've found was a bit odd, that's why I'll leave that for the viewers to know).




This the lower half of the card:


The words underneath reads:

Nota. lo que debe escribirse se hara en el reverso e ira firmado por el
remitente. La otra tarjeta es para la respuesta

Closer detail of the printed stamp:

I've got this item from E-bay. Luckily I've won the bidding for an affordable price, cause normally this would cost a lot since this item is not usually offered in such condition. Additional help (especially with the translations) will be most welcome.