> For the complete documentation index, see [llms.txt](https://documentation.script.tv/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.script.tv/script-tokens/spay/mechanism-design-of-glasses/glass-types.md).
# Glass Types
There are three glass types, i.e., common, rare, and superscript. A summary of all glass types and relevant attributes is shown in the following table:
| Type | Max Allowable Watchtime per day (in minutes) | Reward that can be earned by maxed out common glass per day (in SPAY) | Max Reward Rate Per Minute |
|---|
| Common | 960 | 39.60 | 0.0413 |
| Rare | 1020 | 52.80 | 0.0518 |
| Superscript | 1080 | 66.00 | 0.0611 |
Each glass type offers incremental benefits over the other, i.e., a rare glass provides more benefits in terms of a net payout than common glass, and a superscript provides better rewards than a rare one. The glass types are differentiated based on payouts, so the users are incentivized to hold a higher glass type.
**However, the composition of glasses is such that there are 70% common, 25% rare, and only 5% superscript glasses, which consequently makes superscript glasses more valuable than rare.**
Although superscript glasses offer a significantly larger payout as compared to the other ones, they represent only 5% of the total number of glasses minted.
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