Janice O'neal's token list shows two brass (golden) $5 tokens used by Sahara LV:

1990 by Casino Tokens (now GDC)

1994 by Nevada Coin Minting

Both should be dated so you can tell which you have. Neither is rare... worth maybe $7-25 depending on condition. Don't know whether the '94 is still in use. Maybe a LV slot player can tell us.