Topic: Deception glass, georgian or victorian?

[Lustrousstone]

Probably because it's a liqueur glass (0.75 oz). A decepetive glass appears to hold more than it does. This doesn't

[The Glass Staircase]

Yeah thats a spirits glass which is why it's that size and not a deceptive glass probably early to mid 20th century. I've attached a photo of a deceptive glass I currently have which is from 19th century so you can see.

Adam

[lychap]

What does your  glass look like with coloured liquid in it, just out of curiosity?

[lychap]

Possibly a deceptive gin glass.

[Paul S.]

probably unlikely  -  unless of course you can show us some gin glasses identical to your piece and with a gin deceptive provenance.      Don't think I've ever seen a gin deceptive, but stand to be corrected - there wouldn't be a lot of point in going through this exercise with gin in view of the colour  - toastmasters used these things when imbibing coloured drinks.
Glass lends itself to being successful in the area of deception, in the sense that the refractive qualities of glass deceive us into thinking that the liquid fills the entire bowl.