There was a discussion about luggage straps and it let me check period documents.
What I can find in accessories lists and contrary to common knowledge, (optional) luggage straps up to Model Year 1968 were Elastic Expanders (probably centered w 4 legs, as with 356's).
Only by and after 1968, one could order (black) leather straps, instead. its option code for 1968 and 1969&later differed.
While leather straps are often documented, elastic expanders are not.
So (?):
1964-1967: Elastic expanders
1968 and later: (black) leather straps.
Feb 1965 (MY66), RoW/Swiss, option 9247
<a href="https://www.flickr.com/photos/133290719@N04/18622969989" title="265 by karim noureldin, on Flickr"><img src="https://c1.staticflickr.com/1/451/18622969989_405c83b5d6.jpg" width="375" height="500" alt="265"></a>
Sept 1965 (MY66), RoW/US, option 9247
<a href="https://www.flickr.com/photos/133290719@N04/18188522553" title="965i by karim noureldin, on Flickr"><img src="https://c1.staticflickr.com/1/515/18188522553_dc37885eaf.jpg" width="500" height="375" alt="965i"></a>
<a href="https://www.flickr.com/photos/133290719@N04/18622988509" title="965 by karim noureldin, on Flickr"><img src="https://c1.staticflickr.com/1/291/18622988509_dd8ef16c0c.jpg" width="500" height="375" alt="965"></a>
Sept 1966 (MY67), RoW/US, option 9247
<a href="https://www.flickr.com/photos/133290719@N04/18809235355" title="966i by karim noureldin, on Flickr"><img src="https://c1.staticflickr.com/1/385/18809235355_2aca694988.jpg" width="500" height="375" alt="966i"></a>
<a href="https://www.flickr.com/photos/133290719@N04/18188553733" title="966 by karim noureldin, on Flickr"><img src="https://c1.staticflickr.com/1/519/18188553733_9ff71b96e3.jpg" width="500" height="375" alt="966"></a>
Fall 1967 (MY68), RoW/US, option 9239
<a href="https://www.flickr.com/photos/133290719@N04/18811871461" title="1067i by karim noureldin, on Flickr"><img src="https://c1.staticflickr.com/1/494/18811871461_ea0e3c74c6.jpg" width="500" height="375" alt="1067i"></a>
<a href="https://www.flickr.com/photos/133290719@N04/18782978996" title="1067 by karim noureldin, on Flickr"><img src="https://c1.staticflickr.com/1/542/18782978996_fed4edaf7a.jpg" width="500" height="375" alt="1067"></a>
January 1968 (MY68), US, option 9239
<a href="https://www.flickr.com/photos/133290719@N04/18804092322" title="168i by karim noureldin, on Flickr"><img src="https://c1.staticflickr.com/1/344/18804092322_3b6da0034b.jpg" width="500" height="375" alt="168i"></a>
<a href="https://www.flickr.com/photos/133290719@N04/18621336108" title="168 by karim noureldin, on Flickr"><img src="https://c1.staticflickr.com/1/413/18621336108_02f66272e1.jpg" width="500" height="375" alt="168"></a>
Fall 1968 (MY69), RoW/US, option 9415
<a href="https://www.flickr.com/photos/133290719@N04/18621522848" title="1069i by karim noureldin, on Flickr"><img src="https://c1.staticflickr.com/1/341/18621522848_a6b0d30cb2.jpg" width="500" height="375" alt="1069i"></a>
<a href="https://www.flickr.com/photos/133290719@N04/18621743778" title="1069 by karim noureldin, on Flickr"><img src="https://c1.staticflickr.com/1/270/18621743778_54e9f18849.jpg" width="500" height="375" alt="1069"></a>
Fall 1969 (MY 70), RoW/US
<a href="https://www.flickr.com/photos/133290719@N04/18186506654" title="70i by karim noureldin, on Flickr"><img src="https://c1.staticflickr.com/1/300/18186506654_82b72b0d14_z.jpg" width="640" height="480" alt="70i"></a>
<a href="https://www.flickr.com/photos/133290719@N04/18622901889" title="70 by karim noureldin, on Flickr"><img src="https://c1.staticflickr.com/1/458/18622901889_8450d97fe2_z.jpg" width="640" height="480" alt="70"></a>