Shimano Tekota 500LC Counter lens assembly

[retiredandfishing]

Have a Tekota 500LC in the shop without the counter lens in it.  The schematics do not call out a seperate part number for this.  However the 500HGLC does call out a lens which is part number TGT2319.  Anyone know if this lens will work on the 500LC or where to get a lens cover for the 500LC, or am I just missing something on the schematic.

Thanks,Steve