@nancyjoshua
Personally, I would say, "Definitely not". This is because a violin is a personal preference. He knows what he likes. He knows what sound he wants. He knows what feel he wants. Buying any instrument for someone else is never a good idea, if they have not already picked one out, even then, I would say, "no".
I would suggest you make a card or certificate and tell him you know how much he loved his violin and that for his birthday gift, you wish that he purchase himself a new violin, that it would also please you to see his search for a new or new-to-him violin that he will fall in love with, all over again.
Do you live near Fiddlershop? You could probably plan a visit to Fiddlershop and make it a special outing. I would call ahead and explain the purpose. I know at our semi-local shop, they have a few set aside in my price range all set for me to play around with. They usually end out getting out a few more, but they are ready. My husband is with me and watches and listens. He does not play, but notices when I am having issues with a certain instrument, violin, viola or cello and lets me know. He always notices when I notice, so it is a real help. He helps me not lick one I want because of aesthetics, but have issues with. That is the best gift you could give your husband, remembering it is his choice.
He still would not have to purchase one there, but wouldn't it be fun to go with him as he explores? Let him take his time searching for one, and enjoy watching as he discovers and searches for his violin. That is a lot of the fun in playing, finding your match. You could help with his thinking if purchasing online, too. Be his extra set of eyes and listen to what he is saying. Let him bounce his thoughts off you.
Fiddlershop also has the best prices and excellent shipping with care and ready to play right out of the box. I do not get paid by Fiddlershop and mm ot affiliated with them. I do the forum because I love this forum. I base my assessment on experience shopping through them.