Radio Shack Dinosaur mini game

Radio Shack LCD Dinosaur Game in original box, with built-in clock.
I can't find this anywhere. It is at least 15 yrs old. Any ideas as to value, rarity?
Thanks
Ger (newbie)

Does it look like this:

http://i.imgur.com/xdi74.gif

its pretty rare, but not really that sought after. worth around $30 to $40

No it's different. The box has a big dinosaur with eggs (no window). The game itself is orange wiht a 3.5 x 2.5 cm screen. Cat. no. 60-2236. Original cost $7.95.

Thanks Zak,
ger