Not saying the OP is a Pelt (IMHO) but yes Peltier did make white slags but they are VVVHTF
LINK : https://www.allaboutmarbles.com/viewtopic.php?t=20058
Just found a pic of another one in my folders
Rainbo Definition
LINK : https://www.peltiermarbles.info/rainbos
NLR Definition
LINK : https://www.peltiermarbles.info/nlr
There are of course exceptions to these, this that and everywhere in between as happens in anything mass produced.
(MCSA) Marble collectors Society of America, Akro I.D. link. Complete w/ description and pictures. Also a link from AAM and right here on MC. I hope these Links help ya out on your marble journey Dennis
MCSA LINK : https://www.marblecollecting.com/marble-reference/online-marble-id-guide/akro-agate-co/
AAM LINK : https://www.allaboutmarbles.com/viewtopic.php?f=7&t=3989
One of the many links from Stephs study hall right here on MC
STEPHS STUDY HALL LINK : https://marbleconnection.com/topic/6788-mostly-pix-akro/
Have fun ..... ..... .....
Alley was my second go to but I just wasn't sure from the pix ?? Ah well, @ least we all came to a unanimous decision, Alley it is, a great discussion & exercise in narrowing down the playing field to the right manufacturer
Here's Stephen Bahr's vid link & an AAM link for Vitro tigers eye marble I.D. there is more here if you enter it into the search bar in the upper right hand corner, have fun
A resource from AAM
LINK : https://www.allaboutmarbles.com/viewtopic.php?f=7&t=3490&p=278203&hilit=Vitro+ID+guide+by+Kevin+Roberts#p278203
Here's Stephens link
LINK : https://www.youtube.com/watch?v=PcfEuqd5Y8g
Any orange disqualifies it as being a Spiderman & would make it a Superboy, Spidermen have to have straight red ribbons, no orange. It is borderline, Rainbo/NLR though IMO