Waterman's Lever Boxes carter's you can use a buffer

you can use a buffer stick flat on the surrounding surface to clean the residual paint off that is beyond the diamond depression boundary

OVERSIZE style

and other printed forms of enlightenment about writing implements by and about Francis Mordan (as opposed to Sampson Mordan

The purple are to match the print on carbon copies and the black ones are for

These are for safely grabbing onto barrels

Waterman's Lever Boxes carter's you can use a bufferWATERMAN LEVER BOXES FOR MID VINTAGE WATERMAN. New old stock lever boxes. Slot needs to be . 66" long 16. 85mm for this lever box to fit. Pens that these lever boxes fit are shown in the photo. And I'm sorry to say these won't fit a 52 pen. Not returnable if you break the tabs off.