At that price, I would be expecting gold plating at the rear and silver at the front!
Are these plates going to be the Perspex type, or pressed aluminium? The pre 2001 font is definitely the one to go for
It may not be easy to get hold of plates with the old font and the 'BS' mark, but I have never known an MoT tester be that picky, unless the plates have other issues (e.g. honeycomb background, italic font etc)
Here's an example of what can be obtained via eBay:
https://https://www.ebay.co.uk/itm/3545 ... R_j7rqq_Yg
I have heard that there is somebody who does replica main dealer plates on Facebook too.