Sir John. . . . .
What ? that units GEE-I-ANT glass lens dial cover is not cracked ALSO ?.
Plus . . . . . thats not THE ordinary wire dial pointer . . . what with it's added gingerbread pizazz
It's a looks-a-like-a :. . . .

(That's thanks to someone . . . . for having sixty fo' photos displayed of his same unit.)
Otherwise, its looking like a sit down job with some of your small alum-brass- sheet metal flat stock scraps and your Dremel tool and its grinding attachments, Swiss pattern / machine file set and some Rub n' Buff . . . . Scratch and Sniff . . . and what have you.
Thereby creating yourself a resultant ersatz replication.
Related Aside:
The closest I came to this recently . . . .was ~2 mos ago . . . and was having the batt decline on my 1 foot dia Seth Thomas " wall mounted School Clock ".
I then noticed that it had provisions for a sweep second hand, but never had seen it. A tooth pick applied micro touch of white dope on its recessed shaft, revealed it WAS crawling around.
Not knowing of any available "micro sized" hollow metal tubing . . . . even K & S . . . that would clear, I ended up using a peeled off piece of created "sphagetti tubing " from some #20 solid copper hook up wire.
Thinking of it later, thin brass shim stock, hand, duck bill plier formed into a tube, around a properly sized needle should make a viable possibility.
The sphaaghetti tubing was friction fit pressed on and cleared the minutes collar.
Next, a 1/2 in round disc of " playing card gauge " plastic was center hole progressively "punched" with a large canvas needle , just shy enough to enact a fricton fit of the sphagetti tubing passing thru it.
The pair , was then epoxied from the rear, another 1/4 in dia disc cut, a fine aluminum wire used for the sweep second hand .
I made it full minute hand plus length on the sweeping side, but only 1/4 length on its other side, that is where the other smaller round disc was mounted and counterweighted to balance out at the dials central rotatonal axis.
Thereby . . . . it resulted in no imbalanced loading of that feeble sweep second hand in making a complete rotation.
Red Fingernail polish provided the finish.
In the past, a similar procedure has resulted in dial pointers being made for me on non period reproduction critical situations.
73's de Edd