The Eskaf factory moved from Steenwijk to Huizen in 1927 and continued to produce wonderful plateel until 1934. Due to the fall in production from 1932, this jug was probably made very early 1930s. Again, there is no pattern or decor name.
"OLA" denotes "Orde voor Levende Arbeid" (Order of Living Labour) and these markings seemed to appear during the early thirties for a very short period only.
The green colours used during the "OLA" period tended to be more "copper-green" rather than the darker green as often used before which is clearly visible again on this item. The model was designed by W.H. van Norden.