Our model has the six usual thick BPW on it, so I will add that feature to my Post on it above. I believe Antonin's thin wheels on this 63C may turn out to be a very rare short run if Stannard missed them in his variation guide.
I had added a note asking Forum members to check their models for the Crude door repair "Patch" that Nick has illustrated at his 63C online Guide. The model looks more like an Error than an intentional factory die repair to me, but maybe I am wrong on that thought?? While looking for the repair "Patch", please check for those "Thin Wheels" on this 63C and let us know if any other examples turn up that are owned by Forum members.
Cheers! Kwakers
Tinman with a brand new techno Computer? I may be more obsolete than my 2 year old "Special" camera Joe, AND, most of my Toys are Vintage 1960s. What a boring Senior I have turned out to be in my Adirondack Mountain Cave.....LOL Dick