Tom Scott Antiques has dated this piece to the Regency era.
Looking at this piece and I would say it could also work well as a drinks cabinet too, using the slide out surface for pouring and bottles / decanters etc below as you have an adjustable shelf to accommodate. Perhaps then using the cupboard above for glasses etc...or as a bookcase with storage below and a writing surface.

Any queries or if you need further dimensions, do let me know.
Measuring:
58 inches or 147.5 cm high
30 1/2 inches or 77.5 cm wide
18 1/2 inches or 47 cm depth at the base
28 inches or 71 cm kneehole height under the slide
6 inches or 15 cm top shelf depth
12 inches or 31 cm second shelf depth
Tom Scott Antiques has dated this piece to the Regency era.
Specialist dealer in french & english decorative furniture and interiors
You can view the stock and full dealer information on the Tom Scott Antiques Profile Page