Honestly, how many SHP intakes were hand stamped?

[nuch_ss396]

I was surfing through "the bay" today and came across a '67
L-88 intake that had the last four part numbers ground off
and then other numbers hand stamped in their place.

I had always thought that these were rare items and
represented only the first few intakes of a particular
design. As of late, I have seen way too many of these
hand stamped intakes on eBay. What gives?

Are these all real, or just unscrupulous sellers trying
to cash in on the whole L-88/ZL-1/yada-yada-yada thing?
Steve