Surprisingly, I received both orders within a couple of weeks. So now I have an additional unsealed headlamp, the remaining three LEDs, and the original two halogen lamps. More spares than I'll need for awhile, I think.
On a side note, when using E-Bay, I've noted that even though the seller is listed as located in one's country it doesn't necessarily mean that the ordered item comes directly from the seller. Often the seller is simply an order taker located in (insert country) who passes on the order to the item's original seller or manufacturer.
I've received more than one item that way.
As for the quality of the unsealed headlights, they do seem to be made of glass and at least on the first unit the focus is good. From India, as I recall.
The LEDs came from China.
A previous order for a 4.25 inch LED headlight assembly for my Cozy tub resulted in a broken LED assembly (same unit as in my last post) on arrival, but the vendor made it good immediately after I sent pics.
The actual LED unit had not been securely glued to its base, thus shipping knocked it loose, breaking the positive lead.
The newer ones I ordered I have applied a drop of Super Glue at 4 places equidistant around the bases. That should solve any future breakage issues.