Hi Đuro,

On street views (Google, Mapillary and Panoramax)  this object seem a route marker, not a guidepost.

Could you confirm this ?
Do you have better pictures ?

Best regards,
Yves — Groupe OSM Plein Air 

https://www.openstreetmap.org/node/12707641488/history
https://maps.app.goo.gl/MLxmMU79X7n2utfi7
https://api.panoramax.xyz/?focus=pic&map=18/43.672718/4.435369&pic=16938a85-54d2-4cb2-b1ba-4edfb3774d1c&speed=250&theme=default&xyz=93.21/9.36/44