Business license without watermark is not necessarily false, because it may be normal for some places to have business license without watermark. Watermark is one of the important features to ensure the authenticity of business license, so there is usually watermark on business license. If you doubt the authenticity of the business license, you can verify it in the following ways:

1. Inquire about the industrial and commercial department: you can inquire about the local industrial and commercial department to determine whether the enterprise really exists. Information such as enterprise name and registration number can be provided when inquiring.

2. Determine the format of the business license: the format of the business license is fixed. If it is found that the format of the business license is inconsistent with the standard format, it is necessary to further consider the possible problems.

3. Check the contents of the license: carefully check whether the information on the business license is true, accurate and complete, such as the company name, registered address, legal representative and other information.

4. Find a professional organization for appraisal: if in doubt, you can entrust a professional organization for appraisal to confirm the authenticity of the business license.

In short, if you doubt the authenticity of the business license, you'd better take some measures to verify it to avoid economic losses.

You are welcome to pay attention to or write privately to the legal team of @ Nakagawa Kun to answer your legal questions.