diff --git a/src/MDConcActor.php b/src/MDConcActor.php
index c3e39b6..c5e4138 100644
--- a/src/MDConcActor.php
+++ b/src/MDConcActor.php
@@ -417,6 +417,7 @@ final class MDConcActor implements MDImporterConcordanceListInterface {
 
         // 26: Printed
         "Buchdruckerei" => 26,
+        "Buchdruck" => 26,
         "Druck" => 26,
         "Drucker" => 26,
         "Druckerei" => 26,
diff --git a/src/MDConcMarkingPosition.php b/src/MDConcMarkingPosition.php
index 27dd04c..731ce02 100644
--- a/src/MDConcMarkingPosition.php
+++ b/src/MDConcMarkingPosition.php
@@ -171,6 +171,8 @@ final class MDConcMarkingPosition implements MDImporterConcordanceListInterface
         "Rückseite, unten rechts" => "rear_side",
         "Rückseite, unter Doublierung" => "rear_side",
 
+        "Rückseite, mittig" => "rear_center",
+
         // Misc.
         "x" => "other",
         "Vorderseite" => "other",
@@ -345,6 +347,7 @@ final class MDConcMarkingPosition implements MDImporterConcordanceListInterface
         "Vorderseite Akkordeon" => "other",
         "mittig am Fußgestell" => "other",
         "Balkenskala links" => "other",
+        "Signatur (gedruckt)" => "other",
         "auf Passpartout" => "other",
         "auf Papp-Schmuckrahmen" => "other",
         "Fotomitte" => "other",
diff --git a/src/MDConcMarkingType.php b/src/MDConcMarkingType.php
index 07e646d..95cb9a7 100644
--- a/src/MDConcMarkingType.php
+++ b/src/MDConcMarkingType.php
@@ -32,6 +32,7 @@ final class MDConcMarkingType implements MDImporterConcordanceListInterface {
         "rot gemasert" => "handwritten",
         "ornamentiert" => "handwritten",
         "handschriftlich; aufgeklebt" => "handwritten",
+        "Beschriftung auf Plakette (handschriftlich)" => "handwritten",
         "Beschriftung" => "handwritten",
         "Beschriftung (handschriftlich)" => "handwritten",
         "Beschriftung (spiegelverkehrt und gedreht)" => "handwritten",