I'm looking for this particular lens on ebay and someone's selling a transparent display model one https://www.ebay.com/itm/Pentax-SMC-AF-35-70mm-f3-5-4-5-Transparent-Model-Very-Rare/282838517342?hash=item41da7d465e:g:59gAAOSwktxafvjE
maple classic™ 
@masklayer it's not very good for actually taking pictures, is it? wouldn't light bleed in?
@squirrel it also costs like 20x as much as a normal functional one, but it's neat to see I guess
@squirrel Yeah I wouldn't recommend actually trying to use that lol.