I did some diggin' found the strap this watch came on... Here is the first picture:

Red Letter "A" and "C" is a brand new 20mm TAG-Heuer regular length strap suitable for a 1163 Jo Siffert Autavia (in fact it came on the one I received in the mail today!)...

Red Letter "B" and "D" is the strap my 73363 came in on, which is actually an 18mm wide strap (or 2mm to narrow). This is probably the shortest strap the owner could locate...

Note on the strap labeled "B" how abraided the second and third holes from the right are... This is where the watch/strap combination was worn most of the time...

For this last picture set the strap at the second from the tightest hole. This hole and the next (third most tight) was where this watch was most frequently worn.

Notice that the total overall length of this strap, is just barely the same length as the 6 o'clock end of the regular sized strap suitable for this watch! It amazes me to this day that someone with such small wrists wore a watch as big and bulky as a 7736 equipted Autavia!

Enjoy!

-- Chuck