Hope this helps the OP since we've kind of taken a focus on late built cars for the moment.
Going to withhold the use of the word "discovery" at this point given the small number of the sampling of both the woodgrain and the black camera finishes for the radio bezel on the cars in the discussion. It is interesting that at least at this point it appears that there is a possibility that there may have been a change late in the year at Dearborn on these cars. Unfortunately we don't have any real build dates for most examples but at this point in the study we're focusing on what possibility took place rather than an exact date of the change
EXAMPLES+++++++++++++++++++++++++++++++++++++++
0F02G181xxx - Wood grain0F02G190xxx - Black ADDED since the original posting
0F05M193xxx - Wood grain0F02G194xxx - Black0F05H200897
0F05H2008xx - Wood grain Also in the unrestored picture section. Since we know that cars were not built in sequential order having a few higher digit cars with a possible earlier feature than an earlier VINed example is not unusual. Car was ordered with an AM radio according to the buildsheet.
0F02G203277 - Black - Real build date June 22, 1970 - DougDyar
0F02G206xxx - Black Was ordered with AM radio according to the Marti report
For earlier cars I've got unrestored examples with the wood grain bezel found on the following cars.
0F05H1118xx
0F05M1201xx
0F05M1265xx
0F04H1274xx
0F05R1275xx
0F02G136xxx (Added since the original posting)
0F02Z1409xx
0F05R1631xx
0F05M1769xx
Of course there are many restored examples but left them out of the survey as usual