I have parts book, 10808 Edition A, printed 11/72 for the 250 SL/ 280 SL USA versions
In the back, Table SA 55 630 is the break down of the parts for the hard top.
It shows
Bolt handle left - 113 770 01 26 , replaced by 113 770 01 63 Footnote 6 (this is the piece with the handle)
Bolt handle right - 113 770 02 26, replaced by 113 770 02 63 Footnote 6 (this is the piece with the handle)
Fastener hard top left - 113 770 09 63 Footnote 4 (this is the spiral cut piece on the hardtop itself)
Fastener hard top right 113 770 10 63 Footnote 4 (this is the spiral cut piece on the hardtop itself)
The 113 776 part number is for the separate handle
Could this be that the soft top mechanism changed at the very end of 250 SL production, and that the hardtop did not change until 12193??
My hardtop has the locks with the separate handle, VIN 12730.
Footnote 4 - On model 113.044 from chassis 12193
Footnote 6 - On model 113.044 up to chassis 12192