Security reg. no etched on plastic windows

I'm in the process of replacing all four habitation windows in our Pollensa. The original windows have the A-S build number etched in one lower corner and the vehicle registration number etched in the other. I'd like to keep the same security information on the new windows, but not sure how best to get the etching done. If anyone can help I'd be most grateful. 
Attached a couple of (not very good) pictures of the security info: 
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We have a 'laser etching' machine that would be capable of doing that. Try a local engraving outlet.

Autoglass will probably do it.

PB

You can buy kits off eBay. Also CRIS (the caravan security register ) do them under the vinchip system..
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Thank you everyone. As ever, you have provided suggestions and solutions that wouldn't have occurred to me.