"only for display" is correct and usable in written English.
You can use it to describe something that is meant to be looked at or admired, but not used or interacted with. For example, "The antique car was only for display and not for sale."
Gifts are only for display.
The auction site, Lelong.com.my, carried a cautionary note that the electronic items were "not operational, only for display".
There were plates on the wall, attached by hooks and wires, which were not for eating from but only for display.
It is much more likely for children to grow up believing that it is all a game, that the rules exist only for display and that anybody is free to break them.
For counties with no information or small amount of survey respondents, the average victimisation rate, obtained as the average of the whole state is plotted, only for display purposes.
For counties with no information or small amount of survey respondents, the average perception of security, obtained as the average of the whole state is plotted, only for display purposes.
But holography is expensive and practical only for displaying still images rather than full-motion video.
… OFFICIAL: The 5th Avenue store does have it in stock but for display only, you can go play with it right now but you can't buy it.
At the rear was a fortunetellers' chamber, and though I usually shun such things as silly, only-for-tourist displays, by that point I knew this was no act.
Though Bose supplies a system to Ferrari for its 612 Scaglietti, the Nissan display is only for show.
In the operatic canon, the cliche is that female singers are used only for vocal display and extravagant sensuality, and have few opportunities to sing stories written for them by women.
