Need help with pattern & maker identification

[joanne9168]

I can usually find a pattern and maker on glassware but I'm stumped on this one.  Have spent hours searching and give up so hoping someone recognizes it.  The tumbler is about 5 5/8" high and the brandy sniffer is about 4 1/2" high.  Thanks so much !!!

[rubiano98]

Does the tumbler have a slight iridescent cast to it? I can't tell for sure on my monitor.

Will the cloudiness on the tumbler clean off?

[joanne9168]

Took those pictures before I washed them so will add some "clean" ones.  Dont see an iridescent cast.

[joanne9168]

I think I finally found these on Replacements.  Schott-Zwiesel pattern SCZ16.  Does anyone know the actual pattern name or can put a date on these?  Thanks!

[md1919]

no older than the 1970s when the factory name became schott zwiesel

[janetpjohn_la]

It probably isn't too old, but the replacements site lumps it all together.
Janet