Rare Czech Astera Art Glass Paperweight Lampworked Fish Aquarium Sculpture

Rough Dimensions: 2-3/4” tall, 4-1/8” wide, & 2” deep.
Makers Mark: Unsigned however it still retains the original paper label, “Hand Made Glass Astera Czech Republic”.
Condition: One small chip to the edge of the top facet. Minor shelf wear to the flat polished base. Please see photos and let us know if you need any additional assistance. 
It is unusual to see a Czechoslovakian aquarium. Murano Aquariums are much more common and highly collectable. It is an interesting and rare example and would fit nicely in a collection of aquariums. The weight is composed in four layers two layers of stringy seagrass that has been thoughtful placed to best enhance the stripped tropical fish followed by a final layer of more seagrass, fronds and unusual coppery beaded bubbles.