Vintage Look Ergostem.  The stem comes with sleeves for 1" or 1-1/8” steertubes and has a 26.0 handlebar clamp.

I have cleaned and lubed the bolts and pivots.  The pivots move freely and the bushings are in good condition.  The paint is peeling in a few spots, as shown, but the "LOOK" and "A  ERGOSTEM  B" cover plates are in good condition.

Made in France.