I was surprised by a collection of old postcards – emailed by Cayetano from Girona – with mainly the bordermarkers 574 and 575 on it. I will show you two of them.
We see bm574 and 575 on this peaceful scene. Bm574 was many years later replaced to the left to enlarge the space for the border-traffic. On its original place we now find a plaque with “bis” on it. See this webpage
And this one must be bm577