Nothing ventured nothing gained good luck on your search...perhaps you could tint a repopped lenses which I think may available. I totally understand the desire to have the real deal... May I suggest Hemmings the paper edition as there are old school venders that may still be telephone or email...a longshot of course... Perhaps PM @edwardlloyd... Credit to Photographer, Owner
. If your lenses are flat on the inside , you might contact a stained glass shop and slide a couple Of purple glass disks in side if there is room . I like the lights but to spendy to even dare pick up and look at ! Good luck !
I have found in search a connection to E&J's for those that might have interest...they are pricey but perhaps under a g-note US...I suspect they are quality repro ready to polish or paint and can be bought with or without the actual headlight/lenses which I suspect takes a modern halogen bulb... Hamber @Hispano in France has them on his website...I know he is a superior Metal Smith and does multiple castings of interest including the windshield on the roadster...I have no affiliation, just sharing... https://www.atp-auto-moto.com/boutique-en-ligne/ Credit to Photographer, Owner
Whalen made a similar headlight- a bit nicer in size and shape- but they are much rarer then the type 20s. I have a pair and have only heard of 2 other pairs in the last 10 years. think they were made in Syracuse NY?