Are they hub caps or in-expensive wheel liners? Make and model of your MH would help. Many hub cap style can be purchased through RV stores or online. Dicor wheel covers
I have 4 hubcaps off a 03. I imagine they are the same as you need. If not you'll have four anyway. They came off 16 inch Ford wheels. I put liners on mine and no longer need them. Pay postage to you and they are yours. I do not know what postage would be, but they are light and it should be cheaper than buying new ones. PM me if you want them.