Tig - sorry for checking in a bit late on this thread. Lang is a Brand Value two maker's name (worth 3/4 as much a a BV1 name os similar guns). The Original Quality grade of your gun appears to me to be OQ6, a second quality BLE. The Current Condition level looks to me to be CC5, "Minor repairs needed or restoration accomplished." The value of a BV2-OQ6-CC5 = $2,000. If you need further explainations or think I have missed on the OQ or CC, post back.