Mordan slider in ivory. Barrel is square which is uncommon as normally all of this type are round). There is no damage on this pencil. The ivory has a tiny crack extending from the slider to the bottom of the ivory and has yellowed slightly in a couple of spots. Mechanism works fine. Barrel is stamped “S. Mordan & Co.: plus an “anchor”. Stamp is very crisp.
"S. Mordan & Co.", plus an "anchor" symbol