Delft Holland MCM Ashtray #506 Pottery

Beautiful dark blue and light blues on white ashtray. Made in Holland pottery and numbered. Measures approx. 5" x 1 1/2" tall. No chips , or cracks. Does have a little blue stain under the glaze, shown in last to photos. That's the way it was fired, manufacturers. Small scratch on water not noticeable. Add to your collection. Possibly 1960's or 1970's (not modern)