Another local Hoffman! COLOR!

[Electronic M]

Originally Posted by Yamamaya42

From what I have seen here and there, there are only 2 major types of methods (styles) of bonded safety glass used in these things, RCA, which turns white & cloudy (moldy) looking, best removed with heat, and the Zenith type of bond, which turns green and gummy, best removed with thin wire, and a lot of patience and strong hands!

As E.M. Has confirmed, this tube does indeed have the Zenith type of bonding used for the safety glass, meaning it will be much harder, and not to mention hazardous than the RCA 21FJP22 ones I have done before.
As I have heard that these tend to be more unstable in the process than the roundies,

I'd call it mid-level danger. The 23EGPs with RCA style cataracts tend to implode when heated worse than round or later rectangular tubes. The Zenith guitar string method has has a 100% success rate for me on the yellow/green cataracts, and doesn't use heat.

If you remove the cataract with heat it'll probably implode. If you remove it with just guitar string it'll probably be fine, but a raw 23EGP has a slightly higher implosion risk just sitting there than other color tubes.